While they already leaked out during the show's filming this past fall, NBC has officially revealed the identities of the 18 celebrities competing on The Celebrity Apprentice's fifth season, which will premiere Sunday, February 12 at 9PM ET/PT.

The cast consists of former talk show host Arsenio Hall; singer and former American Idol runner-up Clay Aiken; radio host and former Dancing with the Stars participant Adam Carolla; supermodel and former True Beauty judge Cheryl Tiegs; writer and former Growing Up Gotti star Victoria Gotti; The Real Housewives of New Jersey star Teresa Giudice; actor and former The Incredible Hulk star Lou Ferrigno; magician, comedian and former Dancing with the Stars participant Penn Jillette; comedienne Lisa Lampanelli; rock star and former Growing Up Twisted star Dee Snider; former Miss Universe Dayana Mendoza; actor George Takei; All About Aubrey and former Making the Band star Aubrey O'Day; actress and model Patricia Velasquez; racecar driver Michael Andretti; American Chopper star Paul Teutul Sr.; singer, actress and former Skating with Celebrities participant Debbie Gibson; and actress and former Dancing with the Stars participant Tia Carrere.

"This season of Celebrity Apprentice will be the most exciting yet. The show will be great, with a record number of contestants and 15 episodes. We are thrilled to bring 18 new and talented celebrities who will help me make The Celebrity Apprentice one of the hottest shows on television this spring. This will be Season 12 -- Amazing!" The Apprentice star and executive producer Donald Trump said in a statement.

Similar to its four prior celebrity installments, The Celebrity Apprentice's fifth-season cast won't be vying for a job with Trump but will instead be competing in business-related tasks to raise money for their favorite charities.

All of the celebrities' performances will still be judged in the boardroom by Trump and his children Donald Jr., Ivanka and Eric Trump.

The Celebrity Apprentice's fifth season -- which represents the twelfth overall edition of the NBC reality competition series -- is being produced by Mark Burnett's Mark Burnett Productions in association with Trump's Trump Productions LLC with Burnett, Trump, Page Feldman, and Nancy Gunn serving as executive producers.

"We've never seen such a smart and funny group as this year's lineup of celebrities," Burnett said in a statement. "Celebrity Apprentice is better than ever, and it's all for a great purpose -- raising millions for charity."