Sheryl Crow "danced all night" at Jennifer Aniston's birthday party.

The actress threw an early celebration at her home on Saturday (07.02.09) ahead of turning 40 yesterday (11.02.09) and her friends say they had a memorable night.

Singer Sheryl said: "It was a lot of fun. I danced all night with Courteney Cox. I can't remember the last time I did that. So that was a sign of a good party!"

When asked about the rumours Jennifer's boyfriend John Mayer had written her a special song, Sheryl admitted she was unsure.

She added: "I didn't hear it. I don't know anything about it."

When asked what she was wishing her friend for her birthday, Courteney said: "More health and happiness."

Meanwhile, Sheryl also celebrated her birthday yesterday but said she had planned nothing special to mark turning 47.

She said: "I'm just going to hang out with my girlfriends during the day and then I'm having dinner with some friends. I may do something crazy like get a massage and a manicure or pedicure. That's about as crazy as it's going to get!"