The best way to promote your concert is to get your kids on stage! Oh and gotta name yourself The Spice Girls! Otherwise is useless!

The spice girls are getting ready to conquer the world once again, so they thought of a very awesome idea: why not bring our own kids on stage, that way everybody will think of us as super moms, and they'll like us once again, and they'll buy our concert tickets, and we'll get even richer, and in the end we'll end up separately anyway! Let's do it... and they actually done it!...

The reunited girl band - Victoria Beckham, Mel B, Geri Halliwell, Emma Bunton and Mel C - were performing at London's O2 arena, as part of their comeback tour, and during their hit song 'Mama' the Spice children made a special appearance, much to the delight of the crowd.

Victoria's three boys, Brooklyn, eight, Romeo, five, and two-year-old Cruz came on wearing T-shirts with her nickname 'POSH' on the front, while Emma cradled her four-month-old baby boy Beau.

Mel B's daughters, Phoenix, eight, and eight-month-old Angel, also came on but Geri's 19-month-old daughter, Bluebell, was the only child missing as she is unwell with chicken pox.

Mel C is the only Spice Girl yet to become a mother.

All the children wore headphones or earplugs to protect them from the noise and at one point Brooklyn Beckham even covered up his ears as his mum was singing next to him.

It is the first time the children have been introduced to fans on their world tour although they have been to most of the concerts, the first being in Vancouver, Canada, on December 2.

The children's photos also appear in a montage during 'Mama' at every show. Victoria's soccer star husband David was also in the audience and looked very much the proud husband when his boys joined their mum on stage.

An onlooker said: "David had the biggest grin on his face. He was mouthing all her lines. He loved it."