One of the celebrities on the upcoming season of Dancing With the Stars is already overwhelmed by the rehearsal schedule.

Glee star Amber Riley, who was recently announced to be joining the cast on this fall's 17th season of Dancing With the Stars, told People magazine that it has been a difficult process thus far.

"The rehearsal schedule is grueling, but I've been really enjoying the workout aspect of it," Riley admitted to People in a Saturday report. "It's four hours a day for six days a week."

The actress is paired up with four-time Dancing With the Stars champion Derek Hough. "When I found out [Hough] was the person I was going to be dancing with it boosted my confidence a little bit, so I'm really excited about it," Riley continued.

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The actress said that it might be more difficult for her having to be the sole focus of a dance routine.

"I'm used to having 11 other people around me, camouflaging my bad dancing," she said, referring to her fellow Glee cast members. "Now it's me and Derek."

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Riley will be facing some stiff competition in the upcoming season from other young stars like Corbin Bleu (High School Musical), Nicole "Snooki" Polizzi (Jersey Shore) and Christina Milian (The Voice).

Season 17 of Dancing With the Stars is scheduled to premiere on Monday, Sept. 16 at 8 p.m. on ABC. The new season will only be airing on Mondays this fall as opposed to its usual Monday-Tuesday schedule.

Watch the cast announcement for the new season here:

Tags: Dancing with the Stars Dancing With the Stars Season 17 Amber Riley