The Spice Girls are set to reunite for the British Queen's Diamond Jubilee this summer.

Band member Mel B let slip that the 1990s hit group will perform in honour of the monarch's anniversary celebrations in London.

The singer appeared on Australian TV and revealed that the Spice Girls will play an exclusive show at Buckingham Palace in front of the Royal Family on June 4.

The blunder happened when she was asked whether the girl band will perform at the 2012 London Olympic Games.

"Ooh, I think the Queen's Jubilee concert is the event I'd be looking at more closely for that to happen," she told Australian breakfast show Sunrise.

According to British newspaper The Sun, the star tried to distract from her slip-up by changing the subject.

However, she reportedly confirmed the news to TV workers after the programme.

Up until now the pop group were expected to perform at the London 2012 Olympic Games.

According to recent reports Mel B was trying to convince her fellow band members Geri Halliwell, Melanie Chisholm, Emma Bunton and Victoria Beckham to sign up for the exclusive performance.