Brit Psyched for Madonna Gig

Britney Spears "is excited, but in a grownup way" about collaborating with Madonna for her Sticky & Sweet tour, a pal tells People. The recovering pop tart, who filmed the taped segment yesterday, “has come a long way in the last year. She has settled down and is full of life but not childish," says the friend.

"Working with Madonna is a dream, but I think she feels like it's one she’s earned." the pal said. "She’s respectful, but full of her own ideas about the work." (More Britney Spears stories.)