Britney: New stage show is 'on fire'

Britney Spears has promised fans her 'Femme Fatale' tour is one of her most entertaining shows yet.

The 'Criminal' singer – who will kick off the series of concerts in St Petersburg, Russia, on September 22 and finish in Lisbon, Portugal on November 9 – is delighted with her group of backing dancers and says people will also be entertained by her "six or seven costume changes".