Back home following a charity trip to Washington DC, AnnaLynne McCord was back to work on "90210" on Thursday (June 25).

The CW starlet looked sexy in a colorful bikini top paired with jean shorts, chatting with a few co-stars and tossing on a bright pink robe in between takes.

Meanwhile, Miss McCord recently answered a question regarding possible crossover between "90210" and "Melrose Place," saying, "The producers have actually mentioned that to us. We don't know who or where or what or when yet, but they want that very much."

As for the upcoming sophomore season of her hit CW show, AnnaLynne explains, "Obviously there was a horrible ending for poor Naomi. She is over Liam, and she is over Annie. She goes through the first half of the season really trying to prove that to herself. I don't think she's really over him, but we'll see that push and pull."

Enjoy the pictures of AnnaLynne McCord back to work on "90210" (June 25).