AnnaLynne McCord wore a retro bikini to shoot scenes for 90210 on the beach in LA yesterday. After a few months off from filming, AnnaLynne is back to work on the CW drama, though the characters are no longer high school students after graduation at the end of last season. In the cliffhanger-filled finale, AnnaLynne's Naomi revealed that she is pregnant, though there's no sign of a baby bump yet in this revealing two-piece. AnnaLynne spent her hiatus hanging out with on-again boyfriend Kellan Lutz and he even accompanied her to NYC for the upfronts while she attended his brother's wedding in May. Kellan will be hitting the promotional road for Immortals soon, starting with Comic-Con next week, and she'll be back on the small screen when 90210 premieres September 13.