This special performance is taking place in aid of BBC Children in Need's POP Goes the Musical 2012.

Geri is, of course, best known as one of the members of the Spice Girls. As Ginger Spice, she was at the heart of the phenomenon that became one of the most successful British pop groups of all time. The band's many hits included Wannabe, 2 Become 1, Spice Up Your Life, Mama and Viva Forever.

The Spice Girls recently reformed to sing at the closing ceremony of the London 2012 Olympic Games.

Tickets for the Singin' in the Rain charity performance are available exclusively at lastminute.com/pudsey. At least 50/% from each ticket will go to the children and young people supported by BBC Children in Need.

Singin' in the Rain featured in Chichester's Festival 2011 before transferring to the West End earlier this year.