She bowed out of her judge role on 'American Idol,' but Ellen DeGeneres is heading back to reality TV with a special guest spot on tonight's 'So You Think You Can Dance.'

According to Perez Hilton, the daytime funny lady taped a surprise segment for the Fox competition show to air on tonight's episode. Word is that Ellen will be busting her quirky moves with 'SYTYCD' superstar Stephen "tWitch" Boss.

The pair will redo the hip-hop performance tWitch did with ballet dancer Alex Wong before he was eliminated last month after sustaining an injury.

Ellen all but confirmed the report, tweeting today: "#SYTYCD finale tonight. Broke my heart when Alex had to drop out. Tonight, I do something and I hope it makes him smile."

Perez's insider says Ellen has been rehearsing the piece for months. Watch her bust a move tonight on the show's two-hour season finale, airing at 8PM ET on Fox.