Rihanna has been criticised by fans after sharing images of herself with the Queen's head superimposed on her body.
Many said the Barbadian singer, 29, was being "disrespectful" after the four pictures were posted on Instagram.
The images showed Rihanna in a string of raunchy looks - including skimpy cut- offs, a sparkly bodysuit and a jacket with nothing underneath - all with the monarch's face instead of her own.
"Be humble," she captioned the first photograph.
Some of Rihanna's 52.4 million followers on the site saw the funny side, with several declaring she was a queen herself.
But others were unimpressed with the pictures.
"I don't appreciate this," said one, while another said: "This is so disrespectful."
One follower told Rihanna: "You should be ashamed of yourself! Disgusting."
Another user said the photographs were "horrific and distasteful".
The Queen celebrated her 91st birthday on April 21.
Representatives for Rihanna have been approached for comment.