US President Barack Obama has lavished praise on the "wonderful" Katy Perry.

The singer performed at the White House last night (July 31) to celebrate the 46th anniversary of the Special Olympics.

Obama introduced the US star on stage and he spoke about the 'Dark Horse' lady in glowing terms.

The President said: "We have just one of my favourite people performing tonight - Katy Perry. We are so grateful to her.

"I love Katy Perry. She is just a wonderful person. I've just met her mom and now I know why she is such a wonderful person, but I just want everybody to know she is on tour right now and so for her to take time out to do this is really special, and so we really want to say thank you to her for doing this."

Speaking about the night on Instagram, the singer added: "What an incredibly beautiful evening being invited to sing at the White House for Potus, Flotus & many special Olympic attendees tonight to celebrate these incredibly inspiring men & women. I see them beyond their obstacles. I hope you can join me."

Perry has previously performed for Obama and has backed the Democrat in elections.

Follow us: @Pressparty on Twitter / Pressparty on Facebook.

Watch Katy Perry perform at the White House below: