Nicole Richie left Cabo San Lucas on a private jet yesterday following a bikini-filled girls' getaway with friends like Christina Aguilera and Samantha Ronson. She boarded the plane wearing a long flowy dress, similar to the vintage style that inspired her upcoming Winter Kate designs. She's off on another trip after adventures in Mexico and NYC, where Nicole took part in Fashion's Night Out at Bergdorf Goodman. There was speculation that Nicole's south of the border exploits were to celebrate her upcoming wedding to fiancé Joel Madden, but there's another possible reason — today is the mother of two's 29th birthday!
To see more pictures of Nicole and friends, just