Britney Spears is the latest star to sign up for a spot on hit sitcom WILL + Grace but she'll have to wait until next year (04).

The pop princess has been keen to appear on the show for months but her schedule hasn't allowed her the time to shoot a guest spot.

Now, writers are planning to include her in a storyline in the show's next season.

Britney will join a long line of A-list guest stars who have appeared on the show, including Madonna, Demi Moore, Cher and Elton John.