'Dancing with the Stars' adds Jonathan Bennett, Alfonso Ribeiro, Lea Thompson

LOS ANGELES, Sept. 3 (UPI) -- Jonathan Bennett, Alfonso Ribeiro, Lea Thompson and Bethany Mota have joined the cast of Dancing with the Stars.

The four celebrities will compete against Pretty Little Liars actress Janel Parrish, Olympian Lolo Jones, and General Hospital actor Antonio Sabato, Jr., on season 19 of the ABC series.

Bennett is best known for portraying heartthrob Aaron Samuels in Mean Girls, and Alfonso Ribeiro starred as Carlton Banks on The Fresh Prince of Bel-Air. Thompson appeared as Lorraine Baines in the Back to the Future trilogy of films, and Mota is famous for her YouTube tutorials.

The full list of competitors will be announced Thursday on Good Morning America. Season 19 of Dancing with the Stars returns to ABC on September 15.