Katie Holmes brought more than her dance moves to Thursday night's So You Think You Can Dance. Some 8.4 million people tuned into the 100th episode of the FOX competition, an increase of 17 percent in total viewers.

SYTYCD was the highest-rated show among adults 18 to 54, teens and females, according to network stats.

Check out more pics of stars dancing

Holmes showed off her legs while stepping through a pre-taped Judy Garland tribute on the show.

Watch her performance

She donated her performance fee to Dizzy Feet Foundation, which offers dance scholarships to kids. "I don't think she's ever looked more beautiful," judge Mary Murphy told Usmagazine.com last night. "I bet Judy Garland's giving [Katie] a standing ovation in heaven."

See all of Katie's characters through the years

Added show producer Nigel Lythgoe: "She put herself out there and she didn't have to do that, so I'm very delighted in her performance."

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