Keira Knightley Nip Slip

Click for closeup. The last one is her topless in the movie The Hole.

New York, NY (AHN) - While not as blatant as Tara Reid, Keira Knightley offered photographers a good snapshot on the red carpet of the premiere for her latest flick, "Pride and Prejudice."

A Calvin Klein dress made just for the actress slipped past her left nipple and photographers immediately snapped away without telling Knightley what happened.

Tara Reid was plastered all over tabloid and entertainment magazines after the same thing happened on the red carpet of P.Diddy's birthday party earlier this year. Speculation around that incident, which displayed Reid's left nipple for several seconds, hints that Reid was aware of her exposure.

In both incidents, paparazzi frantically snapped photos while the actresses unknowingly posed exposed.