Blake Lively and Leighton Meester broke out their beach bodies as Gossip Girl started filming in the Hamptons today. The girls looked fashionable of course as Blake traded in her casual preppy personal style for a more flashy gold cover up, while Leighton kept warm in a bathrobe over her one piece. Penn Badgley joined in on the fun in the sun, so either he can't bear to part from his real life girlfriend or we can look forward to seeing what happens next between Dan and Serena. One thing is for sure; Nate is going to have an interesting romantic development when the show comes back on September 1. Even Blake's adorable puppy Penny got to hang out on set, though hopefully she was on better behavior than yesterday.