Britney Spears promises 'most dancing' she's ever attempted in Las Vegas show

Britney Spears has claimed that she would be doing "most dancing ever" in her upcoming Las Vegas residency.

The 'Toxic' hitmaker's show will feature "special effects" to involve the audience in the live performance, the Mirror reported.

Spears told Ryan Seacrest on iHeart radio that there is a lot of different, interesting aspects to the show and a lot of moments where the audience will feel feels like they're in the show with the performers.