I don't like it. I don't think it's nice to use somebody's name, famous or otherwise.

What if somebody Googled their own name, or a friend's, and they found it appeared in a sex story? Perhaps they'll be flattered but I doubt it. The author may even attract abusive email.

FWIW I make a habit of Googling my characters' names before using them in stories. (Full names obviously.) I never use a name if something already shows for it on the internet. It's a bit fun too, using a 'fresh' name.