(Photo:  INFphoto.com)

Miss Kelly is urging her fans to join her in getting their bodies lean and mean for the coming summer months with the help of Hollywood trainer Jeanette Jenkins. The creator of the Bikini Bootcamp DVD, fitness guru Jenkins has shaped stars like Serena Williams and Tia Mowry, and most recently enlisted Rowland for the Bikini Bootcamp Twitter Challenge.

The challenge will allow tweeps from all over the world to work out every Tuesday and Thursday with Kelly Rowland and Jeanette Jenkins. Join the challenge and let @KellyRowland and @JeanetteJenkins know what your motivation is to get healthy and show your workout results by including #Motivation in your tweets. Followers have a chance to win weekly giveaways from the stars.

“You can get the DVD from her website, thehollywoodtrainer.com, and it’s amazing. I love it! She whipped me into shape,” says an excited Kelly, whose new single, "Motivation," will be available on iTunes April 12.