Katy Perry has released a preview of her new music video online.

After unveiling the lyric video to Birthday earlier this month, the star has now unveiled a teaser clip for the promo - which sees her playing a number of children's party entertainers.

Speaking of her Birthday music video on Jimmy Kimmel, K-Pez said: "I wish I could say it’s sexy, but it’s not. It’s me at my most insane."

Birthday is the fourth cut to be taken from Perry's hit album Prism, following the success of Roar, Unconditionally and Dark Horse.