Celebrating a momentous occasion in his life, Pete Wentz was treated to a fabulous 30th birthday in Las Vegas on Saturday night. Accompanied by wife Ashlee Simpson, the pair happily posed for a few pictures at a birthday dinner at Yellowtail restaurant inside Bellagio Hotel/Casino.

A frail Lindsay was spotted outside of the Mayfair hotel in London on Saturday. The producers of Lohan's new film "The Other Side" are hoping a contract that demands regular weigh-ins will help her stay a healthy weight.

Lauren Conrad threw out the first pitch at Dodger Stadium in Los Angeles, California on Saturday. Dressed in the team's uniform, the MTV reality starlet seemed to be having a marvelous time on the mound as she kickstarted the the Dodgers/Phillies daytime ballgame.

Nicole Richie was all over Santa Monica this weekend. First with Pete Wentz at the House of Harlow 1960 and Clandenstine Industries Switch Boutique. A mouthful, I know. Then at Joans on Third with Harlow, and later with dad and Harlow at the Cheesecake Factory.