As some of you may know, Nicole was with some friends in Mexico this past weekend for her Bachelorette party. This means that Nicole may actually be getting married to Joel Madden very soon. I’m super excited and really happy for them! We know that it was Nicole’s Bachelorette because Christina Aguilera, who was invited along, was wearing a T-shirt that said “Tickle your Chi Chis with Miss Richie” on the front, and “Nicole’s Bachelorette 9/17/10” on the back! Below are photos of Nicole and Christina the day after the party, both in Cabo (also with Samantha Ronson) and arriving back in Van Nuys, LA. The other photos are from the date of Nicole’s birthday; she, Sparrow and Joel out and about in Los Angeles.