What Bra Size Is Rachel Bilson?

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Rachel Bilson is an American actress and style icon best known for her roles in The O.C., Take Two, and Hart of Dixie.

Like her famous character, Summer Roberts, her off-screen wardrobe makes people wonder how she styles her bust. In this article, I will be discussing everything you need to know about Rachel Bilson’s bra size.

What Bra Size Is Rachel Bilson?

Rachel Bilson has a bra size of 32B. Her bust measurement ranges from 33 to 34 inches. She wears a bra with B cups and a band of around 28 to 30 inches.

Graphic image of Rachel Bilson with 32B bra size wearing a blue strapless dress with a floral design

Her small 32B breasts are common among Hollywood actresses with a rectangular physique. For instance, Bilson’s The O.C. co-star Olivia Wilde also has a 32B bra size, and model Abbey Clancy with the same cup size both have measurements almost equal to the waist and hips.

Rachel Bilson can wear 30C and 34A as sister sizes for her 32B bra. For comparison, fellow actress Claire Danes wears a 34A bra. Cropped jackets, boat necklines, and demi bras can give Bilson a curve-enhancing effect.

Rachel Bilson Measurements

Rachel Bilson is shorter in height, measuring in at 5 feet 2 inches (5′ 2”). I estimate that her body measurements are 33-23-33 inches, which translates to a bust size of 33″, a waist size of 23″, and a hip size of 33”. She weighs roughly 106 pounds.

Benefits of a Small Chest

Can Go Braless

One of the best things about being small-chested is that if you don’t want to wear a bra, you don’t have to! At their core, bras are meant to support your boobs, and when you are an A or B cup, you don’t need a bra for this purpose.

Minimal Bounce During Workouts

One huge benefit of having small breasts is that they hardly affect athletic performance because of their lack of bounce. It can be painful to have your boobs bouncing around as you work out, and women with small chests don’t have to experience this pain. Plus, small boobs mean you can wear pretty much any sports bra style, even if it has minimal padding.

Can Easily Sleep On Your Stomach

Another advantage of having small breasts is that you can comfortably sleep on your stomach without it being painful on your chest. There’s no need to toss and turn at night to prevent squashing your breasts. It’s also fairly easy to choose sleep clothes.

Drawbacks of a Small Chest

Gaps Form Between Your Boobs and the Bra

When you have A-B sized breasts, it’s not uncommon for a gap to form between your chest and the bra you’re wearing. This is because your boobs are not large enough to fill the bra. Even if you try sizing down to a smaller bra, you might experience this issue.

Might Feel Less Feminine

As you go through puberty and enter womanhood, one key thing that happens is your breasts grow (or, they are supposed to!). So, when you end up with boobs that are A or B cups, you might feel like your figure looks less feminine than you want it to.

Breasts Stay Small as You Gain Weight

If your breasts are dense with tissue, they won’t grow in size even as you gain weight. In turn, they may look significantly smaller as you gain more fat in other parts of your body. However, if you lose weight, the fat in your breasts may also reduce, causing your boobs to become even smaller.

Bra Size Measurement & Cup Size | A, B, C, D, DD Bra Sizes AND Extra Large Breasts


Rachel Bilson has a 32B bra size. This is among the smallest bra sizes available, so it’s easy to find triangle and t-shirt bras in this size. However, it’s prone to looking smaller when wearing full-coverage sports bras.


Allena is the Founder and Editor of The Better Fit, a platform dedicated to empowering women with practical advice on bras and fitness, inspired by her own revelation of the widespread issue of incorrect bra sizing. Her expertise and tips have been recognized by major publications such as Cosmopolitan, Better Homes & Gardens, Insider, and NBC, making her a trusted voice in women's wellness and lifestyle.