48B Bras

A 48B means a 48-inch band with a B cup — roughly a 2-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 48B may sit a letter along depending on who made it.

How a 48B should fit

A well-fitted 48B sits flat against the ribcage with no gap under the cup. Straps should take almost no weight; if you're tightening them to feel supported, the band is doing too little and you likely want a smaller band.

Sister sizes to try if 48B isn't right

• Band feels loose but the cup is right — try 46C
• Band is comfortable but you're spilling over — go up to 48C
• Band digs in — 50A gives the same cup volume with more room

Best 48B styles

Balconette and plunge shapes suit a B cup well, and a lightly lined cup adds shape under fine knitwear without padding it out. Bralettes work here in a way they don't at fuller cup sizes, because there's less weight to support.