Back in the ’90s she knew how to have a good time.
Now that Madonna's made her entrance, the party can truly begin.
Kevin Mazur / WireImage
"LOL, I'm fab!" she thinks to herself as she works the room -- while dressed in Diane Keaton's old hand-me-downs.
Kevin Mazur / WireImage
She spots a friend and quickly heads over to grab a drink with them.
Kevin Mazur / WireImage
A few drinks in and it's time to take silly photos with her best frenemies. Also that's not Gwyneth Paltrow being uncomfortable, that's just how she smiles.
Kevin Mazur / WireImage