Samantha Ronson Shows Off Her Bikini Body In Mexico [PHOTOS]

Samantha Ronson joined Ashlee and Jessica Simpson in Cabo San Lucas over the weekend to celebrate Nicole Richie’s 30th birthday.  The gals soaked up the Mexican sun while toasting Richie, splashing in the ocean and dining on delish fare.

PHOTOS: Oof. Samantha Ronson Gets A DUI

While Ronson was getting her tan on (or trying to), Lindsay Lohan was in Milan partying and shooting an ad campaign for Philipp Plein’s Spring 2012 collection.