updated 10/22/2007 AT 01:00 AM EDT

originally published 10/22/2007 AT 01:00 AM EDT


The biggest winners in Vegas last weekend: birthday cake bakers. NICKY HILTON celebrated her 24th with a group of 35 friends and family, including big sister PARIS and boyfriend DAVID KATZENBERG at the nightclub LAX Oct. 5. That same night, singer MYA gave a half-hour concert at Jet to ring in her 29th birthday. On Oct. 6, The Hills' LAUREN 'LO' BOSWORTH hit LAX with BFF LAUREN CONRAD to party for her 21st, telling Insider, "We're doing it big!" Meanwhile, Dancing with the Stars alum MARIO LOPEZ had a 34th b-day dinner with pals and girlfriend KARINA SMIRNOFF at Tao, where they danced until 3 a.m.


The doctors of House don't just try to save lives on TV. On Oct. 8, the cast got together for a dinner hosted by to raise awareness about Spinal Muscular Atrophy. (House executive producer Garrett Lerner's son, Zeke, suffers from the disease.) "It's close to our hearts," OMAR EPPS told Insider. Added HUGH LAURIE: "To put what meager talents we have to good use is an honor."


Looks like KATE HUDSON and actor DAX SHEPARD are going strong. The couple were seen canoodling as Hudson powered through a workout at the Sports Club/L.A. in Boston, where she is filming Bachelor No. 2.

BEN AFFLECK and his brother CASEY were having so much fun at the L.A. premiere party for Ben's directorial debut Gone Baby Gone that "they basically had to turn the lights on and shut the music off to get them to go home!" says a guest at the Napa Valley Grille bash.

ER's MEKHI PHIFER and expectant fiancée Oni Souratha threw a blowout baby shower for 200 people at their L.A. home Oct. 6. Guests sipped Evian, got massages and drank smoothies with names like Thumbsucker and Baby Bottoms Up.

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