Lovely ladies,Jessica Alba, Jessica Biel, songstress Ciara, and Jennifer Connelly took a jog with late night host Jimmy Fallon over the weekend. But they weren’t just burning calories, they were fighting cancer.

They were on hand in NYC's Times Square to kick off the annual Revlon Walk/Run for Women. The stars ran alongside thousands of other New Yorkers from Times Square to Central Park for the Entertainment Industry Foundation’s "12th Annual EIF Revlon Run/Walk For Women." Money raised from the event will help support local New York-based breast and ovarian cancer organizations.

The two Jessicas are Revlon brand ambassadors…Jimmy, on the other hand, just likes joining in on the fun. “There’s a great spirit out here. A great energy,” he said. “It’s so much fun.”

Jessica Alba may play a superhero on Fantastic Four but on Saturday, but the new mom just wanted to enjoy the event. “I was going to bring my daughter, but I think she’s still on LA time,” she joked about her 10-month-old daughter. Jessica Biel got a little more competitive. “I’m a runner today,” she told reporters. “Well, that’s the goal. Who knows what’s going to happen?”

Biel became more than just a runner, when Revlon announced her as their new Global Brand Ambassador, a post she happily accepted: "Revlon represents today’s modern woman. I am honored to be associated with this strong global brand and to be part of a company that has done so much for women around the world."

If you missed out on the New York run -- don’t worry! This Saturday, May 9th, the walk/run will be going on in LA and will surely be star-studded. If you can’t get out for that either there are plenty of ways you can join in the fight against cancer. Get creative—start your own walk/run in your town! What do you think? Got a better idea? Tell us, comment below!