Margaret Cho was a 100% for me. Clues and I knew those were her legs.
Don't worry about Sherri, I would fall over if it wasn't Ricki Lake. Ie. Pretty darn confident it is her.
The others I am not changing my guesses - Donny Osmond, Tori Spelling, Gladys Knight, Rumer Willis.
Don't know T-Pain but 100% agree with the guess based on clues given/explained here.
But the rabbit and alien are driving me batty! BATTY! No clue.
Alien, I have been everywhere, but clues keep disqualifying them - Paris Jackson, Latoya Jackson (really thought I heard something tonight and the use of the word control, literally and play on Janet's album), Nicky Hilton. A Braxton sister.
Rabbit, so so cocky. I immediately went Donnie Wahlberg. But legs seem huge, so I went Joey Fatone. I think Paul Stanley is a great guess on here though. The hint about the mask on day one and tonight, if he wasn't lying to Nicole, did make me think he was from an older band.
Wait cocky, could it be Gene Simmons?