Credit: Carlos Roque/Broadimage

No shirt, no shoes, no problem!

AnnaLynne McCord has spent most of her summer on the set of her CW hit show 90210 dressed up in everything from Greek goddess garb to lime green slime. But in Los Angeles on Wednesday, the blonde beauty kicked back for some R&R of her own -- in a teeny white bikini!

The slim-bodied star, 24, went for a bike ride around her California neighborhood in the sexy two-piece, sans coverup. Her sunny strands were down and tousled, which completed her laid-back beachy look.

McCord joins a slew of celebs who've been traveling by two wheels this summer -- lovebirds Blake Lively and Leonardo DiCaprio went for a romantic ride through the streets of New York City July 31 while BFFs Ashley Tisdale and Haylie Duff took two retro banana-seat bikes for a spin in Toluca Lake, Calif. Aug. 14.