Katie Holmes

Katie Holmes

Katie Holmes will perform a tribute to Judy Garland on the 100th episode of hit U.S. talent show So You Think You Can Dance.

The actress has been in rehearsals for her big reality TV moment for weeks and now it's official - she'll appear on the special episode, which will air on 23 July (09).

Programme executive producer Nigel Lythgoe says, "She (Holmes) absolutely adores dancing, as does her daughter."

Reports suggest Holmes, who showed off her dance skills last year (08) in U.S. drama Eli Stone, will perform a routine inspired by Garland's Get Happy song from the movie Summer Stock - and she'll don replicas of the late star's trademark jacket and hat for the sequence.

Lythgoe tells People.com, "It’s just an iconic look. And Katie Holmes has got the legs. Wow!"

The producer also reveals Holmes' husband Tom Cruise and their daughter Suri have been attending rehearsals and cheering the actress on.