Britney Spears continually changes her stage show to stop herself getting "bored".

The 'Womanizer' singer - who is currently completing the European leg of her 'Circus' tour - continually changes her set list and introduces new dance routines to ensure her performances are always fresh.

She explained: "We have a song called 'Mannequin' that we're adding to the show, which I'm really, really excited about, so it should be interesting. We have to update the show or it gets really boring."

The 27-year-old singer is currently in the French capital Paris, and admits it is one of her favourite cities.

She said: "It's going really well so far, I'm having a lot of fun. I'm very excited to be in Paris. It's one of the most beautiful places I've been to so far. It's very cool."

Britney isn't only changing her routines for her European fans, she's also making some alterations to her upcoming North America shows.

She explained to 'Entertainment Tonight': "We've changed up a couple of numbers in the show, so that's going to make it a lot more fun for me and the dancers. It'll be cool."