34A bra size: chest and cup measurements, sister sizes in inches and cm, example of celebrity breasts

According to our data, 1,47% of women in the United States, or 1987058 people, have this size. Among them: Goldie Hawn, Natalie Portman, Vanessa Hudgens. Below you will learn how size 34A differs from sizes 34AA, 36AA, 32A, 36A, 32B, 34B. Find out why it’s smaller than average.

How many inches and centimeters in 34A bra size

	in	cm
Bust measurements (US+0\ UK+0)	34 – 37	86,4 – 94
Underbust measurements (US+0\ UK+0)	33 – 35	83,8 – 88,9
Bust (US+4\ UK+4)	30 – 33	76,2 – 83,8
Underbust (US+4\ UK+4)	29 – 31	73,7 – 78,7

Bra size (US+0\UK +0 system)	Cup diameter	Volume of one cup	Weight of both breasts
34A	10.6 cm (4+1/6 in)	312 cm3 (19 cu in)	0.56 kg (1.2 lb)

Examples of what size 34A breasts look like in celebrities

1. Goldie Hawn

Goldie Hawn by annulla, on Flickr. Attribution-ShareAlike 2.0 Generic (CC BY-SA 2.0)

2. Natalie Portman

black-swan-natalie-portman by Balletstar011, on Flickr. Attribution 2.0 Generic (CC BY 2.0)

3. Vanessa Hudgens

Vanessa Hudgens by Eva Rinaldi, on Flickr. Attribution-ShareAlike 2.0 Generic (CC BY-SA 2.0)

34A VS other sizes

vs 32A: The 32A bra has 2 inches less band. And the cup volume is slightly smaller.
vs 36A: The 36A bra has 2 inches more band. And the cup volume is slightly larger.
vs 34AA: The 34AA bra has the same band size. But the cup volume is smaller.
vs 34B: The 34B bra has the same band size. But the cup volume is larger.
vs 32B: It’s a sister size. The 32B bra has the same cup volume. But the band is a little tighter.
vs 36AA: It’s a sister size. The 36AA bra has the same cup volume. But the band is a little looser.

34A sister size chart

	Sister size down	Current bra size	Sister size up
US/UK	32B	34A	36AA

Is 34A big, small or medium?

Both size 34A breasts weight 1.2 lbs (0.56 kg). The volume of one breast is 19 cubic inches (312 cm3). This is the volume and weight of 6,93% of women in the United States, or 9405409 people.

The number of women with smaller breasts is 10,45%. 34A is conventionally smaller than average size.

11,24% of women in the United States have a A cup size. 3,5% have a smaller cup size. The A cup size is conventionally smaller than the average cup size.

34A equivalents

US+0 system:

EU (Europe) – 85AA
FR/BE/ES – 100AA
AU/NZ – 16AA
JP/KO – 85AA
IT – 5AA
UK+0 – 34A
UK+4 – 38AA
US+4 – 38AA

US+4 system:

EU (Europe) – 75AA
FR/BE/ES – 90AA
AU/NZ – 12AA
JP/KO – 75A
IT – 3AA
UK+0 – 30D
US+0 – 30D
UK+4 – 34A

What size sports bra for 34A

34A (US+0/UK+0 system) = M

34A (US+4/UK+4 system) = XL