What Bra Size Is Rose Byrne?

As an Amazon Associate we earn from qualifying purchases.

Rose Byrne is an award-winning actress who has appeared in several comedies and dramas. From her breakthrough role in Australia for The Goddess of 1967, she jumped to Hollywood stardom with Troy and Insidious.

As someone who frequently appears in magazines and television commercials, many people remain curious about her bra size. In this article, I will be discussing everything you need to know about the bra size of Rose Byrne.

What Bra Size Is Rose Byrne?

Rose Byrne has a bra size of 32B. Her overbust ranges from 33 to 34 inches. She wears a bra with B cups and a band measuring around 28 to 30 inches.

Graphic image of Rose Byrne with 32B bra size wearing a crop top blouse and long skirt

She has a banana-shaped body, making her bust appear almost flat. Fellow Australian Cate Blanchett has a 32B breast size, as well as Lucy Liu, who wears a 32B bra, that seems small for her straight silhouette. Byrne can use 30C and 34A as sister sizes when 32B bras don’t give her a proper fit in some styles.

Unlike C cups, B cups don’t need much support. Spanish actress Penélope Cruz, who has a 32C bra size, needs bras that support and lift breast tissue. Meanwhile, Rose Byrne can opt for bras that add bust volume and roundness.

Rose Byrne Measurements

Rose Byrne is average in height, measuring in at 5 feet 6 inches (5′ 6”). It’s estimated that her body measurements are 32-23-33 inches, which translates to a bust size of 32″, a waist size of 23″, and a hip size of 33”. She weighs roughly 117 pounds.

Benefits of Small Breasts

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.

Don’t Have Back Pain

Ladies blessed with small breasts can avoid the dreaded back pain. Breast weight can cause your shoulders to move forward, which forces the muscles in your back and shoulder blades to adjust. Having less weight in front means your torso can easily carry your breasts, and the weight doesn’t need to be redistributed.

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 Small Breasts

Sports Bras Can Flatten Breasts Too Much

Sports bras are a must-have in every woman’s wardrobe, even if you have small breasts. However, some sports bras have the potential to flatten your chest by compressing more breast tissue. It’s like watching your small breasts disappear once you wear a sports bra.

Might Experience Breast Asymmetry

As you develop breasts, it’s normal for you to experience breast asymmetry. However, this can continue even as you reach adulthood, where the volume of one breast can be smaller than the other. There’s also the possibility that cleavage may veer toward the sides. When you are small chested, every ounce of boobage counts, so having asymmetrical breasts can be frustrating.

Might Feel Self Conscious

It’s normal to feel self-conscious about having small breasts, particularly if you truly want to have large boobs. This can sometimes make you focus on looking for bras that can volumize your breasts regardless of the fit. However, small breasts can be as sexy as other breast sizes.

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


Rose Byrne has a 32B bra size. Her small bra size lets her easily go braless without drawing attention. If you have this size, consider using a push-up or demi bra to achieve a larger bust size.


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.