Comedian Joan Rivers has caused controversy again, this time claiming that President Barack Obama is gay, and that his wife Michelle is “a transgender”.

In the video of her after appearing at a book signing in New York and officiating at the wedding of two fans, The 81-year-old was asked whether she thought the US would ever see a gay president.

responding, she says: “We already have it with Obama, so let’s just calm down.”

“You know Michelle is a tranny,” she adds, and when asked to clarify, she says the first lady is “a transgender, we all know.”

Last year, Rivers said that everybody should “just relax” after Alec Baldwin called a photographer a “cocksucking fag”.

The video of Rivers’ comments is available to view below.