Working hard while soaking up the sun!

AnnaLynne McCord went to work on Tuesday with her fellow female castmates of 90210, and she evidently hasn't skipped a beat in maintaining her bikini body this summer.

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On the Beverly Hills beach set, the modelesque star showed some serious skin in a skimpy black bikini with Brazilian-style bottoms and a teeny black halter top.

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The 25-year-old actress opened up to Self last spring to dish on her non-traditional exercise regimen she used to keep her long and lean figure.

"I'm not the treadmill girl--I like to do things that are outdoorsy," she told the magazine, adding that kayaking is her favorite workout for her core and upper body. "And I just started doing Taekwando, where I work with a grand master, and Brazilian Jiu-Jitsu."

Although her bikini body may appear perfect, McCord knows the importance of embracing her flaws too. In May, she tweeted a photo of herself without makeup, blemishes and all.

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"I woke up this morning and decided I'm over Hollywood's perfection requirement," she wrote alongside the pic. "To all my girls (and boys) who have ever been embarrassed by their skin! I salute you! I'm not perfect--and that's okay with me!"

This article originally appeared on PIC: AnnaLynne McCord Rocks Super-Sexy Black Bikini on 90210 Set