PHOTO BY ANTWAN DUNCAN

If you don't like people seeing you in your work-out clothes, Flavorpill and JetBlue's TrueBlue Yoga at the Great Lawn event in Central Park is not for you. Over 10,000 people participated in the yoga class, inclduing designer Donna Karan, who was more than happy to show off her casual side as she joined yogi Elna Brower to celebrate the first day of summer.