AnnaLynne McCord "Accidentally" Tweets Topless Photo

AnnaLynne McCord shows off her fit body all the time in skimpy bikinis -- but recently showed her Twitter fans a whole lot more!

"This is for you @meganraee," she said with the pic, adding "You rock! Xxx."

McCord's nipple was exposed in the photo -- and it seems AnnaLynne was quick to make sure she removed it.

"Yes its gone!" the fan tweeted at her after AnnaLynne sent her a direct message. "I wasn't Sure if you noticed it when you posted ... that's definitely a great picture!"

McCord re-posted the photo ... this time with her nipple cropped out.
picture after the break