Ships in 24–72 hrs · Free U.S. shipping $75+

Discreet packaging · Shipped Securely

Pay later with Shop Pay, Sezzle & Afterpay
30J bras at HauteFlair

30J Bras

(58 products)

How a 30J should fit

A 30J is a full-bust size, and the engineering matters more than the label. Wide side wings, a firm band with four hooks and seamed cups will outperform a prettier bra with thin straps every time.

Sister sizes to try

  • Band loose, cup fine — try 28JJ
  • Cup overflowing — try 30JJ
  • Band digs in — try 32HH
View as

A 30J means a 30-inch band with a J cup — roughly a 13-inch difference between your underbust and your bust measurement. Cup letters are not consistent between markets: UK-sized brands like Panache run a different ladder to US labels, so your 30J may sit a letter along depending on who made it.

How a 30J should fit

A 30J is a full-bust size, and the engineering matters more than the label. Wide side wings, a firm band with four hooks and seamed cups will outperform a prettier bra with thin straps every time.

Sister sizes to try if 30J isn't right

  • Band feels loose but the cup is right — try 28JJ
  • Band is comfortable but you're spilling over — go up to 30JJ
  • Band digs in — 32HH gives the same cup volume with more room

Best 30J styles

Look for side support panels, which push tissue forward and stop it migrating under the arm — the single most useful feature at 30J. Full cup and balconette shapes both work; strapless is harder at this size and worth trying with a longline style, which spreads the weight across a wider band.

Brands Featured In...

Join the Haute List

Private edits, confidence-forward styles, and a 15% welcome gift — just for you.

No spam. Unsubscribe anytime.

  • FIT EXPERTISE

    Bands 28–46, cups A–K, and a fit calculator.

  • 5,000+ STYLES

    Fifty-one brands, one checkout.

  • DISCREET, ALWAYS

    Plain packaging. Neutral billing descriptor.

  • EASY RETURNS

    30 days, Hassle-free

Haute Flair

Founded 2015•Atlanta, Georgia

Curated lingerie, bras, swim and shape from fifty-one brands — bands 28 to 48, cups A to K.

Not sure of your size?

Two measurements and about thirty seconds.

Bra Size Calculator
Talk to a fitter800 964 5448

Mon–Fri, 9am–5pm ET
help@hauteflair.com

$25 loyalty rewardon orders over $100 — see how it works

Shop

Shop by Style

Fit & Guides

Help & Company
Terms of Service Privacy Policy Accessibility Your Privacy Choices