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Vanity Fair Young Hollywood, Naya Rivera

Joe Scarnici/Getty Images for Vanity Fair

Like many moms, Naya Rivera is OK with making sacrifices.

The 29-year-old Glee alum says her breasts have become uneven as a result of breastfeeding son Josey.

"Shout out to my son for the lopsided boobs. LOL #breastfeeding #momlife He is SO worth it," Rivera wrote on Instagram, alongside a photo of her at the Vanity Fair and Fiat Young Hollywood Celebration at Chateau Marmont in West Hollywood Tuesday.

Lopsided or not, the actress retains her confidence and is not shy about showing off her cleavage. At Tuesday's event, she wore a slinky white plunging Tadashi Shoji gown.

Breastfeeding mothers often experience breast asymmetry, sagging or shrinkage and the conditions can become permanent, which prompts some of them to seek plastic surgery.

Suns out funs out! Dolce. Converse. Stylin'

A photo posted by Naya Rivera Dorsey (@nayarivera) on

Josey is Rivera and husband Ryan Dorsey's first child. The actress gave birth five months ago.

In November, Rivera made her first public appearance since welcoming their baby, also sporting major cleavage. She also showed major skin in a plunging plum wrap dress at a 2016 Golden Globesafter party last month.