New York, June 21 : Gossip Girl star Leighton Meester's alleged sex tape has surfaced on the Internet.

The grainy black-and-white video that shows a possible nude Meester indulging in erotic antics is reportedly bought by celebhotline. com, reports New York Post.

The site allows thrill-seekers to peek at the woman''s bare breasts, who resembles Meester.

"Did you know, she''s a natural blonde," the site says, adding: "This is 100percent the REAL Leighton Meester who plays the sexy socialite Blair Waldorf on the popular television series."

Meester's rep has refused to comment on the tape.

According to TMZ. com, the tape was shot a few years ago by an old boyfriend. (ANI)