Britain's Prince Harry met Lady Gaga at a charity gala last night (08.06.15).

Prince Harry with Lady Gaga and Tony Bennett at the WellChild gala

Prince Harry with Lady Gaga and Tony Bennett at the WellChild gala

The 30-year-old royal was introduced to the 'Poker Face' hitmaker and legendary jazz signer Tony Bennett at a fundraising concert for the children's charity WellChild where the pair were performing music from their collaborative album 'Cheek to Cheek'.

As he thanked her and Tony for supporting the charity for which he is royal patron, Lady Gaga said: "We think you are fantastic."

The flame-haired royal then asked Tony, 88, how he manages to continue performing live at such an age.

Harry said: "I can't believe you have the energy, I don't know how you do it."

Gaga added: "He runs circles around me.

"Wait until we get on stage."

Bennett also spoke to Harry - who met with families who have benefited from WellChild's support on the night as well as staff, nurses and donors - about his late mother, Princess Diana.

Tony said: "Your mum was a good friend of mine.

"I did many benefits with her."

The Prince appeared overjoyed to hear the singer had met his mother on a number of occasions saying, 'That's fantastic'.

When Harry pointed out that it was a shame more WellChild children couldn't be at the Gala at London's Royal Albert Hall, Lady Gaga vowed to come and meet them at a more convenient time.