Nicole Richie Celebrates A Low-Key Birthday With Aguilera, Ronson

Despite her wicked past and wild days of yore, Nicole Richie’s 29th birthday celebration and Bachelorette party was no small affair but probably wasn’t replete with drunken debauchery.

Richie partied with pals Christina Aguilera and Samantha Ronson in Cabo, Mexico. The three seemed to tone it down by having a nice relaxing beach trip. Her birthday comes only a few weeks after son Sparrow’s first birthday, which she celebrated with partner Joel Madden and about 50 guests.

On the beach, Richie hid her bikini body under a sheer purple kaftan while Aguilera looked like shit in purple track pants, oversized sunglasses and a low riding hat. And I’m wondering if she’s not pregnant again, or has just been eating her feelings over the Bionic situation.