US reality TV star Kim Kardashian has been accused of copying Beyonce's old Met Gala outfit, at the Metropolitan Museum of Art Costume Institute Gala 2015 in Manhattan, New York.

The 34-year-old Keeping Up With the Kardashians star, who was accompanied by husband Kanye West on the red carpet, wore a backless Roberto Cavalli white gown with fringe at the bottom.

And Twitter users were quick to notice Kardashian's white lace dress' striking similarities to Beyonce's 2012 Met Gala gown, which was designed by Givenchy.

Met Gala 2015
Singer Beyonce Knowles arrives at the Metropolitan Museum of Art Costume Institute Benefit celebrating the opening of "Schiaparelli and Prada: Impossible Conversations" exhibition in New York, May 7, 2012 Reuters

However, Kardashian revealed that her outfit was inspired by Cher.

"Tonight's inspiration! Cher at the 1st ever Met Gala! I just met her and told her this photo was my inspiration for my dress tonight! She is so beautiful! So happy I met her!" she wrote on her Instagram.

Kardashian also praised Cher in a photo of them together.

"This beauty, this icon! I'm so so happy I met her!!!! We spoke about our amazing Armenian journeys! And that Bob Mackie gown she wore to the Met 1974," Kardashian wrote.