Demi Lovato has spoken out in praise after her friend Selena Gomez won a humanitarian award at the unite4:good ceremony last night (February 27).

The 'Come & Get It' star posted on Instagram that she has bagged the young humanitarian award after years of service to the charity UNICEF.

She wrote: "By far the coolest award I've received -Young humanitarian award! Beyond proud to represent UNICEF since I was 17."

This spurred Demi Lovato - who received the Young Luminary award at the event - into responding on Twitter, with the 'Neon Lights' lady writing:

"I'm proud so of us..Let's continue to #unite4good and make a difference...I love you so much!!"

The former X Factor USA judge meanwhile also uploaded a photo of herself with former US president Bill Clinton.

Watch Demi and Selena in action below: