Victoria Beckham, aka Posh Spice, has revealed that she decided against getting involved in the Spice Girls reunion after being blown-away by Elton John in concert.

After watching Elton John up close enjoying himself so much on stage, it made Victoria Beckham quickly come to the conclusion that she didn't fancy the idea of going back up on stage to perform with the other Spice Girls.

"I was with Elton John this weekend and I told him, 'You're the reason why I stopped the Spice Girls,'" she told the November issue of Vogue Australia magazine.

"I went to see him in Vegas doing The Red Piano, where David LaChapelle curated the most incredible show with him, and I remember sitting there very near to the front and looking at him singing those songs he'd sung time after time, year after year, and his passion and his enjoyment was incredible, even after all that time.

"And a few nights later, I was on stage at Madison Square Garden with the Spice Girls and I thought, 'It's almost like a waste that I'm given this opportunity.

"I appreciate the time I've had with the girls, but I don't have what Elton can have after all these years.'

"There was nothing there, other than that my kids were in the audience and I wanted them to see mummy doing the Spice Girls."

The upcoming Spice Girls reunion tour will now include all the other members: Emma Burton, Geri Horner, Mel B and Mel C.

The English pop girl group first formed in 1994. They released their debut single "Wannabe" in 1996, which hit number one in 37 countries and established their global success.

Their debut album Spice sold more than 31 million copies worldwide, becoming the best-selling album by a female group in history.

Their follow-up album, Spiceworld sold over 20 million copies worldwide. The Spice Girls have sold 85 million records in total, which makes them the best-selling female group of all time and the biggest British pop success since The Beatles.