It looks like Nicole Richie had herself a late birthday party, and this one was bikini themed! The socialite spent this weekend south of the border in Los Cabos, Mexico, where some famous friends joined her poolside. Ashlee Simpson showed up in a tiny-weeny black polka-dot bikini (had to), while Sam Ronson went with a more pink and blue tie-dye style. Ashlee’s sister Jessica Simpson also attended, but she apparently didn’t get the memo and forgot her two-piece. *Sigh* We’ll let it slide this time, Jessica. But do it again and you’re off the guest list. Check out more in the gallery below!
[Photo: Splash News Online]