Tony Mantuano is going all Final Four with the April 7 premiere of "Top Chef Masters."

Mantuano is throwing a viewing party from 9 to 11 p.m. that evening in the private dining rooms at Spiaggia, 980 N. Michigan, and he's letting fellow chef-testant Susan Feniger in on the fun -- via Skype. She'll be talking from her Los Angeles restaurant, Street.

The restaurant sent an email blast out at 10:30 11:30 a.m. today about the $20-a-head party (that's right, $20). Phones were off the hook within 15 minutes. The event is officially sold out, spokesman David Semanoff told us just a few minutes ago.

The 100 lucky guests get to nibble antipasti, cheese, sweets and a dish that Mantuano made during the premiere episode (details of which are being held under lock and key, of course).

The $20 donation will go to Feeding America, the charity Mantuano has chosen to compete for on the show.