The official cast for Dancing With the Stars season 17 was announced Wednesday morning on Good Morning America.

Dancing With the Stars co-hosts Tom Bergeron and Brooke Burke Charvet announced the 12 celebrities that would be competing on the upcoming season.

Jersey Shore standout Nicole "Snooki" Polizzi will be paired with newcomer Sasha Farber.

Former football wide receiver Keyshawn Johnson will be paired with newer dancer Sharna Burgess.

Sitcom legend Valerie Harper is joining the cast despite battling terminal cancer. She will be partnered with Tristan MacManus.

Pretty Little Liars star Brant Daugherty, who plays Noel Kahn in the popular series, is also joining the cast and will be paired with one-time Dancing with the Stars winner Peta Murgatroyd.

The Voice co-host Christina Milian is participating in the new season with two-time champion Mark Ballas.

Television personality Bill Nye "The Science Guy" is also participating in the new season with newcomer Tyne Stecklein.

Actress/model Elizabeth Berkley will be on the new season, paired with fan-favorite Val Chmerkovskiy.

High School Musical alum Corbin Bleu will also be in the new cast and is paired with one-time winner Karina Smirnoff.

Glee star Amber Riley, who plays Mercedes on the show, will be partnered with four-time champion Derek Hough for the upcoming season.

Comedian Bill Engvall, of the Blue Collar Comedy Tour, will be competing on the new season with newcomer Emma Slater.

Former reality TV star Jack Osbourne, of the popular Osbournes, will also be participating and is paired with two-time champion Cheryl Burke.

Finally, sitcom star Leah Remini will be participating in the new season and will be partnered with Tony Dovolani.

Season 17 of Dancing With the Stars premieres on Monday, Sept. 16 at 8 p.m. on ABC.

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Dancing with the Stars, Dancing With the Stars Season 17, Snooki, Leah Remini, Bill nye