A Cup Size Guide
A cup is the smallest standard cup size, representing a 1-inch difference between bust and underbust measurements. Perfect for petite frames and those seeking minimal coverage.
Quick Facts: A Cup
Bust-Band Difference
1 inch (2.5 cm)
Approx. Volume (34 band)
~100-150 ml
UK Equivalent
A
EU Equivalent
A
Common A Cup Sizes
A Cup Works Best For
- ✓Petite frames
- ✓Athletic builds
- ✓Teen development
- ✓Minimal coverage preference
Common Challenges
- !Finding well-fitting bras
- !Limited style options in some stores
- !Bras may gap or gape
Best Bra Styles for A Cup
Sister Sizes for A Cup
Sister sizes have the same cup volume with different band sizes. If your band feels too tight or loose, try a sister size.
Tighter Band
32AA
Your Size
34A
Looser Band
30B
Frequently Asked Questions: A Cup
Is an A cup considered small?
A cup is the smallest standard cup size, but 'small' is relative. Many women comfortably wear A cups and find styles specifically designed for smaller busts.
What bra styles work best for A cups?
Bralettes, push-up bras, and plunge styles work well for A cups. Wireless bras and triangle cups are also popular choices that provide comfort without excess material.
Can A cups wear wireless bras?
Absolutely! A cups often find wireless bras very comfortable since there's less breast tissue requiring structured support. Many prefer wireless styles for everyday wear.
Find Your Perfect A Cup Bra
Use our calculator to confirm your size and get personalized recommendations.