After late night VMA rehearsals yesterday Britney Spears was all smiles as she sipped on champagne with six girlfriends at P. Diddy’s Pure Nightclub Party in Las Vegas.

Here’s what People magazine had to say:

Spears, who arrived in Vegas Friday afternoon and had slipped into the club through a side door with six girlfriends, wore a strapless black mini as she held court in the VIP area, smiling, sipping champagne and dancing barefoot on a couch. At one point, Diddy got on the microphone and told the crowd, “Britney, she holds her head up high, show some respect.” Spears ducked her head down shyly, but bounced back when her new single “Gimme More” blared over the speakers. Her friends jumped in front of her and started dancing. The singer left around 2:30 a.m., smiling and waving to the crowd as she walked through a path cleared by security guards.

In regards to Brit-Brit’s upcoming performance a little birdie told me that:

“She looks great. She’s going to blow people away.“

and TMZ is reporting:

Friday night run-through: Brit-Brit will open the show on Sunday with her new single, “Gimme More,” a track that begins with the apropos warning, “It’s Britney, bitch!”
Brit-Brit’s act will include a cadre of dancers and Vegas-y aerialists. During the rehearsal, she was still working in some tricky choreography. “With each run-through, a choreographer gives Britney more steps to weave in.” Lord knows she can weave! As the practice continued, says the report, the dancers’ performances become more sexual. Oh, this sounds good, don’t it?

Let’s take a trip down Brit-Brit’s MTV VMAs performances memory lane!

1999 “Hit Me Baby One More Time”

2000 “Oops I Did It Again” (B. Scott’s favorite!)

2001 “I’m A Slave 4 U”

2003 “Like A Virgin”