Lady Gaga has been left red-faced after a so-called friend sold naked pictures of her to an American gossip magazine.
In the snaps, published by US magazine Star, the 24-year-old singer is seen passed out wearing nothing but a pair of 5inch stilettos.
One picture shows her clutching her legs beneath her knees, with her feet tightly bound together.
In another she is passed out naked at the bottom of a flight of stars.
The pal claimed they were releasing the pictures to give Gaga, real name Stefani Germanotta, a wake-up call because her hard-partying ways are getting out of control.
They said: “Stefani used to be so happy and full of life but I’m shocked how much she has changed. She has gone off the deep end.”
A spokesperson for the singer said she had no comment to make.