Topless pictures of pop star Madonna have been leaked once again, and are making rounds on the Internet. After the much-touted Scarlett Johansson nude photo leak, the 53-year-old Madonna is the latest victim of such an incident this year.

Photo Credit: Reuters The Queen of Pop- Madonna

This is not the first time Madonna's unflattering pictures have surfaced on the Web. The raw, full frontal black-and-white images of Madonna were leaked earlier. The pictures were later rumored to have been auctioned for more than $10,000 in 2009.

The latest leaked pictures are said to have been taken in 2008 when she was reportedly changing for a photo shoot in a hotel room in Brazil. A Web site recently published those uncensored topless photos.

The images show her on a sofa wearing thongs and a sheer, see-through bra. Looking at the shots, it appears Madonna was unaware the pictures were being taken.

Madonna didn't take these pictures out of some vanity; someone snapped the shots while she was getting changed to go out, said the Web site that has published the leaked pictures.

The finger of blame points at one of her exes, who betrayed her trust and leaked her private pictures, said a report on the Crushable site. One can clearly see a male arm zipping Madonna into a skirt or black halter dress and probably he used his left hand to discreetly snap the photo while she was looking down.

Madonna was reportedly dating model Jesus Luz, who is half her age, in 2008.

Madonna first married actor Sean Penn in 1985, and later tied the knot with British film director Guy Ritchie in 2000. The singer is known to have had several short-lived relationships in her life -- over the years, she has dated basketball player Dennis Rodman, model Tony Ward, musician Stephen Bray, rapper Vanilla Ice, and actor Carlos Leon.

Currently, the Queen of Pop is dating French dancer Brahim Zaibat. The couple was reportedly spotted smooching and cuddling on a beach in New York.