Spill the tea: most people are wearing the wrong size — and blaming their body for a math problem. Fit is the whole game. Get it right and everything feels better. Here's the no-nonsense guide to measuring, sizing, and comfort.
How do you find your correct lingerie size?
To find your size, measure your underbust (band) and the fullest part of your bust (cup) with a soft tape, then use those two numbers with a size chart — the band is your underbust measurement and the cup comes from the difference between bust and band. For everything else, match your waist and hip measurements to the chart. When you're between sizes, size up for comfort.
Here's how to do it in five minutes.
How to measure yourself
- Band (underbust): wrap the tape snugly around your ribcage, right under your bust, level all the way around.
- Bust: measure around the fullest part, tape relaxed (not squishing).
- Waist: the narrowest part of your midsection.
- Hips: the fullest part around your seat.
Write the numbers down and compare them to the brand's chart — never assume your size carries between brands. Our Size & Fit Guide turns these into your Adeline's size (XS–4X).
Signs your lingerie doesn't fit
| What's happening | What it means | Fix |
|---|---|---|
| Band rides up your back | Band too big | Size down the band |
| Band digs / can't breathe | Band too small | Size up the band |
| Spillage over the cup | Cup too small | Size up the cup |
| Cup gapping / wrinkling | Cup too big | Size down the cup |
| Straps dig into shoulders | Band isn't supporting | Fix the band first, then adjust straps |
The "sister size" trick
If the cups fit but the band's off (or vice versa), try a sister size — go down a band and up a cup, or up a band and down a cup, to keep the cup volume similar. It's the quickest way to fine-tune a near-miss.
Comfort rules that never change
- The band does ~80% of the support — it should be snug and level, not riding up.
- Straps carry the rest — if they're digging, the band is too loose.
- Two fingers under the band is the sweet spot: firm, not strangling.
- Between sizes? Size up. Comfort beats a smaller number every time.
The bottom line
Great fit isn't luck — it's two measurements and a size chart. Measure your band and bust, check for the tell-tale signs of a bad fit, use sister sizes to fine-tune, and always choose comfort over a smaller tag. Do that and lingerie finally feels as good as it looks.
Start here: Size & Fit Guide • Bra & Panty Sets • Teddies & Bodysuits
Frequently Asked Questions
How do I measure my lingerie size at home?
Use a soft tape to measure your underbust (snug and level) for the band, the fullest part of your bust for the cup, plus your waist and hips. Compare those numbers to the brand's size chart rather than assuming your usual size, since sizing varies between brands.
How do I know if my bra fits correctly?
A correct fit has a snug, level band that doesn't ride up, cups that fully contain the bust without spilling or gapping, and straps that don't dig in. You should be able to fit about two fingers under the band. If straps carry most of the weight, the band is too loose.
What should I do if I'm between two sizes?
Size up for comfort, since a slightly roomier fit is far more comfortable than a too-tight one. You can also try a sister size — going down a band and up a cup, or vice versa — to keep the cup volume similar while adjusting the band.
What is a sister size in lingerie?
A sister size is an alternative bra size with a similar cup volume but a different band — you go down one band size and up one cup size, or up one band and down one cup. It's a quick way to fine-tune fit when the cup is right but the band feels off, or the reverse.
