Gwyneth Paltrow Values Madonna's Friendship 5/18/08

Hollywood actress Gwyneth Paltrow really values having pop superstar Madonna as a best friend - because she is a "perfectionist" like herself.

The Iron Man star, who has been good friends with the Material Girl since she moved to the U.K. in 2002, admires the singer's determination to keep herself looking great - despite being nearly 50. But she also insists the pair can relax and have fun together, away from the public eye.

She says, "She's a great woman. She's got a lot of wisdom. We just have fun together. She works on herself harder than anybody else I've met. "We do share that and we're both public women. We are both perfectionists."