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Shallow Breasts: How to Tell, Why Cups Gape & Best Bras

Three unlined underwire bras with stretch floral lace cups in ivory, black and blush on linen beside a tape measure
HauteFlair EditorsOctober 202612 min readFit Guide
Straight Answer

What are shallow breasts, and which bras fit them?

Shallow breasts have a wide or tall base on the chest and sit close to the body, so the breast tissue is spread out rather than projecting forward. Many are also "top-empty": flatter above the nipple, with the fullness lower down. It is a shape, not a size, and it happens at every cup size.

The best bras for shallow breasts have lower-cut cups (balconette, demi and plunge), stretch lace or unlined upper cups that settle against the breast, and a firm band. Deep molded T-shirt cups are the usual problem, because they hold a fixed depth your breast does not fill.

If the top of every cup gapes but the band and wire fit, change the cup shape before you change the size. Going down a cup often makes the wire too narrow for a wide base.

Not sure of your size?Shallow breasts often measure differently from how they fit. Brasize.ai walks you through it.
Find My Size

If T-shirt bras always wrinkle at the top, cups dent when you press them and every new bra seems a size too big even though the band fits, the problem is probably depth. Most bras are cut for a breast that projects forward. Yours spreads out instead.

Here is how to tell whether your breasts are shallow, why the shape trips up so many bras, which styles fit it, and how to choose a size without trading a gaping cup for a wire that digs.

The Short Version
  • Shallow breasts have a wide or tall base and sit close to the chest.
  • Shallow is not small. A G cup can be shallow; an A cup can be projected.
  • Top-empty breasts are flatter above the nipple. Many shallow breasts are both.
  • Lower-cut cups fit best: balconette, demi and plunge.
  • Stretch lace and unlined cups settle against the breast instead of standing away.
  • Fix the cup shape first. Sizing down can make the wire too narrow.
2things decide cup fit: volume and depth.
3cup cuts that suit the shape: balconette, demi and plunge.
1quick test: lean forward and look in a mirror.

What Are Shallow Breasts?

Breasts where the tissue is spread across a wide or tall base on the chest, so they project less than their volume would suggest.

Every breast has a base, sometimes called the root: the area where it attaches to the chest wall. It also has projection: how far it sticks out from the chest. Two breasts with exactly the same volume can have very different shapes. One has a narrow base and projects a long way forward. The other has a wide or tall base and sits closer to the body. The second one is what bra fitters call shallow.

Side views of two breasts with similar volume. The projected breast has a narrow base and sticks out further from the chest. The shallow breast has a taller, wider base and sits closer to the chest, with less fullness at the top. Same volume, different depthProjectedNarrow base,sticks out furtherShallowWide base, sits closeto the chestBase (root)Projection
Two breasts with similar volume. The shallow one spreads over a taller, wider base and sits closer to the chest.

Shallow breasts are often, but not always, top-empty as well. That means there is less tissue in the upper part of the breast, between the collarbone and the nipple, and more of the volume is toward the bottom. The two words get used together because they cause the same problem in a bra: empty space at the top of the cup.

Shallow is a shape, not a size. It is common at small cup sizes, but plenty of people in a DD, F or G cup have shallow breasts, and plenty of A and B cups are projected. Breasts can also become shallower over time, especially after breastfeeding or weight loss, as the tissue settles. Our breast shapes guide covers the other shapes and how they combine, since most people are a blend of two or three.

How to Tell If Your Breasts Are Shallow

You do not need a fitter. Three checks with a mirror and the bras you already own will tell you most of it.

The Checks
Lean testLean forward to 90 degreesWithout a bra, bend forward from the hips and look side-on in a mirror. Projected breasts fall forward into a long cone. Shallow breasts stay closer to the chest and spread out sideways.
Side viewCompare base and depthStanding side-on, look at how tall the breast is where it meets your chest compared with how far it sticks out. If the base is tall and the breast is short in profile, it is shallow.
Upper chestLook above the nippleIf the area between your collarbone and nipple is flat or slopes gently, with most of the volume lower down, you are also top-empty.
Bra historyCheck your molded brasIf the top of every molded T-shirt cup wrinkles or dents when you press it, but the band fits and the wire sits flat, the cup is deeper than your breast. That is the most reliable sign of all.
Check both sides

One breast is often a little fuller or more projected than the other. Fit the bra to the fuller side and use a stretch lace cup, which adapts to the smaller side better than a molded one. Our uneven breasts guide has more on this.

Shallow vs Projected, Top-Empty and Pendulous

These words overlap, and different brands use them differently. Here is how they relate.

Shape Base on the chest Projection Main bra need
Shallow Wide or tall Low Lower-cut or stretch cups
Projected Narrow High Deep cups, narrow wires
Top-empty Any Fullness is low Less fabric in the upper cup
Pendulous Any Tissue below the crease Seamed lift at the crease
East-west Any Nipples point outward Side support, angled cups

Shallow and projected are opposite ends of the same scale. A projected breast needs a deep cup and often a narrower wire; a shallow one needs a shallower cup and often a wider wire. That is why the same size in the same brand can fit one person perfectly and gape on the next.

Top-empty describes where the fullness sits rather than how deep the breast is overall. Pendulous breasts sit low, below the crease, and need lift as well as a cup that does not gape. East-west breasts point outward and often gape at the inner edge of the cup rather than the top.

Why Bras Fit Shallow Breasts Badly

Most cups are shaped for a breast that projects. On a shallow breast the same few problems come up again and again.

Common Fit Problems
GapingThe top of the cup stands awayThe cup has more depth than your breast fills, so the upper edge sits away from you. Under a thin top it shows as a ridge.
DentingThe cup collapses when pressedA molded cup is a fixed shell. If there is air in it, pressing the top makes a dent that stays.
WrinklingFabric folds at the apexIn seamed or unlined cups, spare fabric gathers near the nipple or along the top seam.
False sizing downSmaller cup, narrower wireGoing down a cup to remove the gap also narrows the wire, which then sits on breast tissue at the sides of a wide base.
ShiftingThe cup tilts or movesAn empty cup has nothing to hold it in place, so it tips forward when you bend or lift your arms.

The pattern to notice is that the band and wire usually fit. The wire sits flat at the crease, the band is level, the center sits on the chest, and only the cup is wrong. That is a depth problem, and the fix is a shallower cup in the same size or a sister size, not simply a smaller one. Our guide to molded and seamed cups explains in detail why molded cups gape on this shape.

The Best Bra Styles for Shallow Breasts

Look for cups with less fabric at the top and edges that can settle against you. Construction matters more than padding.

Styles That Work
Best overallBalconetteThe cup is cut low and straight across, so there is less upper cup to gape. A seamed balconette lifts from below and gives a rounded shape without needing projection. Browse balconette bras and see our balconette bra guide.
For close-set or top-emptyPlungeA low center and angled cups leave the upper inner breast open, which is often exactly where shallow breasts are empty. Browse plunge bras, and our plunge bra guide covers the depths.
For a smaller cupDemiA demi cup covers about half to three quarters of the breast, so the top edge sits lower and lies flatter. Browse demi bras and see our demi bra guide.
For any shapeStretch lace top cupA firmer lower cup for support with a stretch lace upper cup that shrinks to fit. It is the most forgiving construction for shallow and top-empty breasts. Browse lace bras.
For a natural shapeUnlined underwireAn unlined cup has no shell, so it follows your breast instead of holding its own shape. Browse unlined bras.
A shallow breast in a deep molded cup, which leaves an empty gap at the top of the cup, and the same breast in a lower-cut balconette cup, which follows its shape. Why the top of the cup gapesDeep molded cupEmptyspaceThe cup holds its ownshape; the top stays emptyLower-cut cupTop edgesits on youLess fabric at the top,nothing left to gape
A deep molded cup keeps its own shape. A lower-cut cup puts its top edge on the breast, so there is nothing left to gape.

Styles to be careful with

Deep molded T-shirt bras are the hardest style for this shape. Some brands make shallower molds, and a plunge or balconette T-shirt bra often works where a full-coverage one does not, so it is worth trying a few. Full-cup bras with tall upper cups tend to leave a gap at the top unless the upper cup is stretch lace. Push-up bras can fill a shallow cup by moving tissue up from the bottom, which some people like for a fuller neckline; just know that it changes your shape rather than fitting it, and see our push-up bra guide for how the lift levels differ.

Three unlined underwire bras with stretch floral lace cups in ivory, black and blush on linen beside a tape measure
Unlined stretch lace in demi, balconette and plunge cuts: the most forgiving styles for a shallow shape.

How to Fit a Bra on Shallow Breasts

Because the band and wire usually fit, fitting is mostly about getting the tissue into the cup and judging the top edge honestly.

Five Checks, Every Time
Step 1Lean forward to fastenBend forward so the breasts fall into the cups, fasten the band on the loosest hook, then stand up.
Step 2Scoop from the sidesShallow breasts often have tissue spread toward the underarm. Sweep it forward into the cup with the opposite hand.
Step 3Check the wire firstThe wire should sit flat against your ribs all the way around, behind all the tissue. If it sits on breast at the side, the wire is too narrow, whatever the cup does.
Step 4Then judge the top edgeRun a finger along the top of the cup. A small gap that closes when you lift your arms is fine; a gap that stays, or a dent, means the cup is too deep.
Step 5Check under a T-shirtPut on a thin, fitted top. Any ridge at the top of the cup will show there before it shows in a mirror.

If the wire fits and the top still gapes, try the same size in a shallower style: a balconette instead of a full cup, or stretch lace instead of molded foam. If you do go down a cup, go up a band at the same time only if the band is genuinely loose. Our sister sizes guide explains how band and cup trade off, and our bra fitting guide covers every other check.

Do not tighten the straps to close a gap

Shortening the straps pulls the cup up against the breast for a moment, but it also lifts the band at the back and digs into your shoulders. If the cup only fits with the straps cranked tight, the cup shape is wrong.

Our Picks for Shallow Breasts

Every bra here has a lower-cut or stretch upper cup. We have included options from small cup sizes to full busts.

Bras We Recommend
Best overallPanache Ana PlungeThe Panache Ana Lace Plunge Bra pairs a stretch lace top cup with stabilized bottom cups, an inner side sling and power mesh wings, in sizes up to an H cup. The stretch top settles against a top-empty breast instead of standing away.
Best balconetteNatori Flora UnlinedThe Natori Flora Unlined Balconette has non-padded stretch lace cups and an open scalloped neckline, in bands 32 to 38 and cups B to DDD.
Best demiNatori Peony UnlinedThe Natori Peony Unlined Demi Bra has stretch lace demi cups on an underwire frame, in bands 32 to 36 and cups A to DD.
Best scooped necklineLe Mystère Lace AllureThe Le Mystère Lace Allure Unlined Demi has unlined lace cups with a modern scooped neckline, set into a narrow frame. The lace is a nylon and spandex blend, so it gives where you need it to.
Best plus sizePanache Sculptresse EstelThe Sculptresse Estel Full Cup Bra has lined bottom cups for shape and stretch lace top cups, in sizes 34DD to 46K. It is a full cup that still works for a top-empty shape because the upper cup stretches.
Best small cupTimpa DuetThe Timpa Duet Lace Underwire Demi Bra is unpadded crochet lace with elastane, made for small cup sizes, so it shapes to a shallow breast rather than leaving an empty shell.

For more choice, browse balconette bras, plunge bras, unlined bras, demi bras and bras for small busts.

Close-up of the stretch floral lace top edge of a black unlined balconette bra cup lying flat on linen
A stretch lace top edge lies flat instead of holding a shape your breast does not fill.

Wearing Shallow Breasts Under Clothes

The right cup removes the ridge under fitted tops. Here is what to reach for.

What you are wearing Best bra Why
Thin T-shirts and knits Smooth stretch lace or a shallow-mold plunge No ridge at the top edge
Low and square necklines Balconette Low, straight top edge
Deep V-necks Plunge Low center, open upper cup
Sheer or lace tops Unlined lace demi Lies flat and looks intentional
Strapless Molded strapless with a firm band The band holds; check the top edge

Strapless is the one place where a molded cup can help, because the cup shape gives the bra something to hold on with. Choose a lower-cut strapless and check the top edge carefully; our strapless bra guide covers how to pick one that stays up. For thin T-shirts, a smooth stretch lace often sits flatter than a molded cup with a gap, even though it is not seamless. Our T-shirt bra guide explains the trade-off.

Finding Your Size With Shallow Breasts

Volume and wire width decide your size. Depth decides the style.

Shallow breasts often measure as a larger cup than they look, because the volume is spread over a wider area. That surprises people, but it is usually right: the wire has to be wide enough to sit behind all of a wide base, and within a brand the wire gets wider as the cup goes up. The fix for the gap at the top is then the style of cup, not a smaller size.

Take your underbust snugly and your bust measurement both standing and leaning forward. Brasize.ai walks you through both and gives a starting size you can try in a balconette or stretch lace style. If the size is close but the wire is too narrow or too wide, our sister sizes guide explains which way to move.

What This Means for You

Shallow breasts spread across a wide or tall base and sit close to the chest. It is a shape, not a size, and it fits best in lower-cut cups, balconette, demi and plunge, with stretch lace or unlined upper cups and a firm band.

When the band and wire fit and only the top of the cup gapes, change the cup shape before you change the size. Lean forward and scoop when you put a bra on, judge the top edge under a thin T-shirt, and never use the straps to close a gap.

More shape guides

Pendulous, East-West and All Breast Shapes

Compare the shapes closest to yours and the bras that fit each one.

Breast ShapesPendulous BreastsEast-West

Frequently Asked Questions

What are shallow breasts?
Shallow breasts have a wide or tall base on the chest and sit close to the body, so the tissue is spread out rather than projecting forward. It is a shape, not a size, and it happens at every cup size.
What is the difference between shallow and top-empty breasts?
Shallow describes how far the whole breast projects from the chest. Top-empty describes where the fullness sits: less above the nipple and more below. Many breasts are both, which is why the two terms are often used together.
What bra style is best for shallow breasts?
Lower-cut cups fit best: balconette, demi and plunge. Stretch lace or unlined upper cups also work well because they settle against the breast instead of holding a fixed shape. Deep molded T-shirt cups are usually the hardest style to fit. Shop balconette bras
Why does the top of my bra cup gape?
If the band and wire fit, the cup is usually deeper than your breast. Try a shallower style in the same size before going down a cup, because a smaller cup also has a narrower wire. Check your size at Brasize.ai
Can you have shallow breasts with a large cup size?
Yes. Cup size measures volume, and shallow breasts can hold a lot of volume across a wide base. Many people in DD to G cups and above have shallow breasts.
How do I know if my breasts are shallow or projected?
Lean forward to 90 degrees without a bra and look side-on in a mirror. Projected breasts fall forward into a long cone. Shallow breasts stay closer to the chest and spread out sideways.

This guide covers bra fit for shallow breasts and is for general information. It is not medical advice. If you notice a change in one breast, such as a new lump, dimpling or a change to the nipple, see a doctor. Sizing varies between brands, so check the size chart for any individual bra.