Droves of fitness nuts and fans hit the sand of Los Angeles' Hermosa Beach on June 15 for the Summer Shape Up — presented by Shape Magazine and hosted by celeb trainer Jillian Michaels from The Biggest Loser.

Jillian — who rocks the cover of the July/August issue of Shape — had a blast interacting with fans and inspiring fitness in a workout class based on her new Hard Body DVD, while her trainer friends (including Andrea Orbeck, Jeanette Jenkins, Kenta Seki, and Natalie Yco) headlined other sessions.

Scroll down for a photo of Jillian doing her thing!

Attendees also grabbed snacks, swag, and giveaways! And, when all was said and done, everyone got to chillax at the Smirnoff Sorbet Light after party. Wish we could have been there!