Adam Gregory is Sierra Mist Shirtless

90210 hunk Adam Gregory spends the day with friends and his new pet pooch Phil at the Sierra Mist Beach House on Sunday (July 5) in Malibu, Calif.

To celebrate Independance Day, the 21-year-old actor had fun at the SoBe Lifewater 4th of July Pool Party at Hotel Shangri-La in Santa Monica, Calif. Also spotted poolside: SNL funnyman Andy Samberg (with his fellow Lonely Island member Akiva Schaffer), Rashida Jones, Joel Madden (with brothers Benji and Josh), Brittany Snow and 90210 couple Jessica Stroup and Dustin Milligan.

10+ pictures inside of shirtless sexy Adam Gregory…