Katie Holmes "adores" dancing.

The actress is set to show off her footwork in a special performance on the 100th episode of US TV talent contest 'So You Think You Can Dance' and producer Nigel Lythgoe says she has astounded everyone with her routine, which is inspired by Judy Garland's 'Get Happy' from the movie 'Summer Stock'.

Nigel said: "She absolutely adores dancing as does her three-year-old daughter Suri.

"She will wear the jacket, the little hat. It's just an iconic look. And Katie Holmes has got the legs. Wow!"

Katie's husband Tom Cruise and their daughter were regulars at Katie's rehearsals, and Nigel said their pride was clear to see.

He added to People magazine: "It was great to see the sort of family bond. It was beautiful to see.

"It was the pride in Tom's eyes, which I liked. I think we all stood around and felt very proud."

Katie's dancing is so impressive, Nigel says she would easily pass the show's judging panel if she auditioned seriously.

He said: "I think she would wow the judges and she'd certainly wow the public. if anybody didn't pick the phone up and vote for her, I'd be very surprised."