HerRoom
US online retailer known for its own fit tooling (including a cross-brand cup-volume index) and a deep size range.
HerRoom in numbers
HerRoom pairs a wide brand catalog with fit content and its own cup-volume index designed to compare cup depth across brands. Useful when a brand's letters differ from your measured size and you want to know which way.
Brands stocked at HerRoom
The US reference for consistent grading: seven decades of pattern engineering, a broad band range and cups to H in core lines.
Fashion lingerie with a lighter hand: elegant fabrics and softer support that suit smaller and mid-range cups best.
Structured everyday bras: the brand fitters recommend when a contour or minimizer needs to hold its shape all day.
Comfort-led mainstream bras with a broad band range: a mass-market answer to full-figure everyday support.
The 18 Hour legacy: full-figure mass-market bras with some of the widest bands in mainstream retail.
One of the oldest names in the category, now a comfort and wireless mainstream brand.
Two sizing worlds in one brand: numbered underwire bras and the alpha-sized bralettes the label is famous for.
The full-bust specialist: firm bands, deep projected cups and UK letters to K, plus one of the best-known sports bras in real sizes.
Full-bust fashion: prints and lace with real engineering, in UK sizing, from the same group as Fantasie and Elomi.
Full-cup everyday for projected shapes: seamed cups with depth, in UK sizing, from Wacoal Europe.
Full-bust, larger bands: the go-to for 38–48 bands with cups to K, in UK sizing.
French premium everyday, labelled in FR with EU and US equivalents; shallow, wide cups and among the widest wires in the category.
Convert first, then filter
Two measurements give one US size. Everything else converts from it.
Use the cup-volume index to see how a brand's cup compares before converting; Deep in mainstream and full-figure US brands.
Bands and cups run differently by house: the brand pages here tell you which way before you order.
HerRoom: answered
What sizing systems does HerRoom carry?
US, UK, EU. Brands are labelled in their native systems; convert your measured size before filtering.
What is the size range at HerRoom?
Bands 28–56; cups AA–N across brands across stocked brands; individual brands vary.
Which brands does HerRoom stock?
Wacoal, Chantelle, Natori, Le Mystère, Panache, Freya, Fantasie, Elomi, Anita, Bali, Playtex, Warner's, Calvin Klein, Simone Pérèle.
How do I find my size across brands?
Measure once, get your US size, convert into each brand's native notation, then apply the brand's fit notes (band firm/soft, cup small/generous, wire width). The brand pages on Brasize.ai do this for you.
Editorial reference; not an endorsement. Brasize.ai does not sell bras.
Shop at HerRoom → Shop links may earn a commission; prices unchanged. How this site makes money.
Opens HauteFlair’s own hub page; use your measured size there. HauteFlair is owned by the same company as Brasize.ai; that relationship never changes the sizing math, charts, or fit advice on this page. How this site makes money.