Brit at Cassie’s 21st Birthday Party    ·    September 9th, 2007

Britney Spears sure is soaking up the Las Vegas party-scene. Britney’s been hitting the clubs and various parties — this time Brit hit up singer Cassie’s 21st birthday party at Jet Nightclub At The Mirage last night. Alli (far right) joined her and the two seemed to be having loads of fun. Britney hit up two more parties on the same night, more on that coming up!