Well I don't know if this site has everyones, weather they're in use or what but it's all I've got and better than nothing. It is the fan mail addresses and more is explained on the site. It has a load of famous people.
Www.seeing-stars.com/Search.Shtml
Hope I've helped. If the link dosent work just google seeing stars then it's celeb mailing addresses.
Good luck. Hope it has who you want.
Xxxx