In the new movie "What's Your Number?" Anna Faris tries to track down her ex-boyfriends to figure out if any of them are "the one."
That wouldn't be an easy task for Drew Barrymore, Paris Hilton, Jennifer Aniston, Jessica Simpson or Cameron Diaz -- who always have a new love interest.
Drew, in particular, seems to have had a boyfriend for every year she's been in showbiz -- that's a lot! She's dated everyone from Corey Haim to Edward Norton to Tom Green to Justin Long (twice!).
Click "Launch Gallery" below to see some Hollywood's infamous serial daters:
So, what's your number? Tell TooFab in the comments below!