"So You Think You Can Dance" producer Nigel Lythgoe won't predict which dancer will end up the winner on Wednesday's season finale. But he's confident that guest star Adam Lambert is going to be well-behaved.
Lythgoe said he passed the message to Lambert's camp that he doesn't expect any surprises during the live, two-hour episode, airing at 8 p.m. EST on Fox.
Last month, Lambert's racy performance during the American Music Awards on ABC drew the ire of the network, which contended that Lambert went further than he had during rehearsals. He was dropped by ABC from a "Good Morning America" appearance.
Lythgoe said he thinks Lambert may have enjoyed making a splash but will perform as rehearsed for "So You Think You Can Dance." Lambert was last season's "American Idol" runner-up to winner Kris Allen.
Other singers on the dance finale include Jennifer Lopez, Mary J. Blige and Leona Lewis, with performances by the Groovaloos dance group and by the show's top 20 contestants.
The finalists include husband-and-wife competitors Ashleigh and Ryan Di Lello along with Russell Ferguson, Jakob Karr, Kathryn McCormick and Ellenore Scott.
Viewers cast votes for the dancers after Tuesday's performance show. The winner revealed Wednesday receives a $250,000 cash prize.