Queen Latifah, Snooki, Tiffani Signing on for New Season 'Dancing with the Stars'

8/12/2011 11:00 AM PDT

Queen Latifah, Snooki Tapped For 'Dancing with the Stars'

Queen Latifah and Snooki will sign on to do the next season of "Dancing with the Stars" ... sources connected with the show tell TMZ.

And, show sources tell us, Tiffani Thiessen will also be a contestant.

As TMZ has already told you, Rob Kardashian will also compete.

Producers have said they wanted to upgrade the contestants for the new season, which begins next month.

Did they succeed?  You decide.

12:36 PM: A rep for Tiffani tells TMZ, the actress is denying any involvement with the show -- but our sources insist ... she will appear on next season.