Ellen forgot Katy Perry was married and things got really awkward

So, the reigning queen of US daytime television, Ellen DeGeneres had a bit of an embarrassing slip us yesterday.

The talk show host left the audience cringing when she completely forgot about Katy Perry and Russell Brand's two-year-long marriage. 

As as guest on the show, Katy was asked to play a game called 'Will You Perry Me?' – a quick fire round where the singer was asked to choose which celebrities she would rather date. 

Before starting, Katy made a joke about having to get married again, to which Ellen very awkwardly replied, "You weren't married!"

The singer then reminded Ellen of her fleeting marriage to Russell Brand and even referred to the wedding gifts she had given her in 2010.

Fortunately they were able to swiftly move past the blunder with Katy joking, "It's been a long time, honey. No wrinkles, no lines!"

Check out the full cringe-inducing clip below.