Portman's Britney Treat For Pals

Natalie Portman and Britney Spears both featured in off-Broadway musical "Ruthless" in their youth and still keep in touch with each other - much to the delight of Portman's Harvard University pals.

Nat explains, "I got an invitation (from Britney) to a party and forwarded it on to my friends as a joke.

"They told me they would murder me if I didn't go and take all of them, so I went with six boys. It was basically the thrill of their lives."