Katie Holmes working hard to stay slim

Updated: Sep 22, 2012, 13:09 PM IST

London: Actress Katie Holmes has been doing her best to stay fit following her split from Tom Cruise.

The 33-year-old has been working out at Barry`s Boot Camp in New York City, reported Showbizspy.

"Katie has been going to Barry`s Boot Camp in New York City and she is working really hard. She looked great, well rested and seemed happy," a source said.

"She was dressed down and looked casual and comfy. Her hair was wavy and natural. During class, Katie was holding her own on the treadmill and was a fast sprinter! She was super friendly with the other girls next to her.

"One mentioned how she is the coolest, most down-to-earth celebrity she has ever met," the source added.