G Cup Size Boobs or Breasts

G Cup Size Boobs or Breasts

What is the weight of G cup size breasts? Which are the best bras for G cups? What about swimwear? Read on to find out.

What is G Cup Size?

Going by US bra sizing, a G cup means that your overbust measurement is 7” larger than the underbust measurement.

Here are some examples of G cup measurements:

  • 28” underbust + 35” overbust = 28G
  • 33” underbust + 40” overbust = 34G
  • 42” underbust + 49” overbust = 42G

Check the pictures below of two G cup bras on two different band sizes (US 30G and 36G bras).

Is G Cup Smaller than GG?

Yes, a G cup is smaller than a GG. However, the GG cup is only available in UK and Australian sizing. In the US, there is no GG cup. Instead, after G cup, there is an H cup.

Difference Between G Cup and FF Cup.

G Cup Vs FF Cup in the UK and Australia: In UK and Australian bra sizing, a G cup is bigger than an FF cup.

G Cup vs. FF Cup in US: In American bra sizing, there is no FF cup. However, the equivalent of the FF is the US H cup. Basically, the UK/Australian GG cup is one size larger than the US G cup.

Head over to this page for a complete overview of international bra sizes.

Average Weight of G Cup Breasts

G cup breast size varies. As a result, their weight also varies.

Generally, G cup breasts all “project” the same amount. However, on smaller band sizes, the breasts are narrower and, therefore, smaller.

Here is an overview of how much G cups weigh:

  • 28G breasts weigh about 1.2lbs each
  • 30G breasts weigh about 1.5lbs each
  • 32G breasts weigh about 1.7lbs each
  • 34G breasts weigh about 2lbs each

 Source: Hourglass Lingerie.

If you want to know how much your G cup breasts wear, you can use the ‘water displacement technique’ that is explained on the link.

G Cup Size Equivalents (Sister Sizes)

The sister sizes of G cups are H (when you do a band size down) and F/DDD (when you go a band size up_.

For instance, the sister sizes or 40G are 38H and 42F/DDD.

Best Bras for G Cup Breasts

Women with smaller full-bust sizes can get away with wearing ‘everyday bras. However, if you are a G cup, you will definitely need a bra with some supportive elements. For example, you can go for 3-part cup bras, those with wide straps or those with wide bands.

Here are some of the best G cup bras that we recommend:

1. Third Love 24/7™ Pima Cotton Plunge Bra


Available in US 30-40G)

2. Playtex Women’s 18 Hour Comfort Bra


Available in US 40-42G

3. Wacoal Basic Beauty T-Shirt Bra


Available in US 32-40G

4. Chantelle Rive Gauche Side Support Bra


Available in US 32-40G

5. Natori Pure Luxe T-Shirt Bra


Available in US 32-36G

More in this Series

Jeanette is a certified professional bra fitter. Originally from Lyons, France, Jeanette moved to Houston, TX to head the Brabbly content team. When not talking about bras and underthings, she's usually tucked in her study writing a sci-fi novel.

Leave a Reply

Your email address will not be published.

Size Guidelines

Shopping Cart0




5 Lucky Winners!