See the Full Cast of Hairspray Live! Before It Premieres

After originating the role of Tracy Turnblad in the 1988 John Waters film, Lake will make a cameo during a makeover scene at Mr. Pinky's during the musical.

The Hamilton actor will play Seaweed J. Stubbs, Penny's love interest.

Winokur, who played Tracy Turnblad in the 2002 Broadway show, will also make a cameo during the makeover number.

After starring in The School of Rock on Broadway, the actress will take on the role of Seaweed's younger sister, Little Inez.

The comedian will have a small role as Rob Barker, a TV newscaster who reports on Tracy Turnblad.

The Disney Channel star will play heartthrob Link Larkin. Perfect choice, seeing that his celebrity doppelgänger, Zac Efron, played the character in the 2007 film.

The Descendants 2 star will play Chenoweth's daughter once more when she takes on the role of Amber Von Tussle.

The Will & Grace star will play Mr. Pinky in the show.

The Broadway star will also appear in the upcoming musical as Prudy Pingleton, Penny's overprotective mother.

The comedian is set to make a special appearance as a gym teacher.

Newcomer Maddie Baillio has been cast in the lead role after being plucked from the 1,000 other young hopefuls who attended an open casting call.

The singer is set to play Penny, Tracy Turnblad's best friend in the show.

The Broadway star is set to play Velma Von Tussle, the vindictive producer of "The Corny Collins Show," in the upcoming show.

His sister Julianne may have starred as Sandy in Fox's Grease Live!, but now Hough is stepping into the spotlight as he plays Corny Collins.

The hilarious actor will play Edna's husband, Wilbur, in the live production.

After starring in The Color Purple, Hudson will add Motormouth Maybelle to her long list of iconic Broadway characters.

Not only will Fierstein provide new written material, but he is also set to reprise his role as Edna Turnblad, which he won a Tony for in 2003.