Katie Holmes has donned her dancing shoes to film a cameo for the finale of hit U.S. talent show So You Think You Can Dance.

The Dawson's Creek star has been dogged with rumours about her involvement with the series after it emerged she was taking secret dance lessons and had met with the programme's producer Nigel Lythgoe.

And now sources on-set confirm the actress is set to appear on the show after filming a cameo segment earlier this week.

An insider tells E! Online, "It taped last week. It's going to be on the finale. It's a Broadway does Hollywood number. It opens on a Broadway stage and then she walks into a Hollywood studio."

And Holmes dazzled everyone on set with her skills.

The source adds, "She was amazing. She was such a pro. Her legs are in great shape. She's got a hat and a cane and she's wearing a leotard and tights."

The season finale airs on August 6.

Image © PR Photos

(This news article provided by World Entertainment News Network)