What is it about the breasts of 90210 actresses turning up all over Twitter? First we had Tori Spelling's tits hung up like damp pants in the background of her husband's twitpic and now we've got AnnaLynne McCord slipping a nipple to a random fan on the site. Are they not that bright or is it just their 'thing'? Will Luke Perry be flashing a testicle next week?

Last week AnnaLynne McCord was spotted grinding her 41-year-old boyfriend Dominic Purcell in a bikini whilst his eight-year-old daughter looked on taking photographs, but we think it's probably safe to assume that she snapped this one herself. Hopefully :-/

Apparently she tweeted it to a random fan as a 'gift'. The fan, who seemed pretty female, replied saying: 

"333 ahh thanks! you are so sweet! and thats definitely a great picture!"

We're not really sure if we'd call the gesture 'sweet', but it's certainly generous. Thanks, AnnaLynne.