Rapper Tyga is facing a demand for $20 million (£13.4 million) from two models over topless shots which appeared in his video for the song Make It Nasty.

The hip-hop star, who is signed to Lil Wayne's Young Money Entertainment, was initially slapped with a lawsuit from Alissa Rae Ross, Azia Davies and Elizabeth Velasquez last December (12) after they filmed semi-naked scenes for his promo.

They claim video producers insisted the film would be "tastefully shot" and that their nipples would be "covered" or "edited out" of the final cut - but when an unedited version of Make It Nasty was released online, they sued for breach of contract, invasion of privacy and fraud.

Now two of the plaintiffs, Davies and Velasquez, have stepped up their legal battle by demanding $10 million (£6.7 million) each in punitive damages over the unwanted exposure, reports Tmz.com.