14/08/2014 16:37 BST | Updated 22/05/2015 10:12 BST

Jessie J Does TWO Racy Outfits At 2013 Capital Rocks Bash

Not content with flashing the flesh in one raunchy outfit, Jessie J opted for two dare-to-bare ensembles at the annual Capital Rocks concert in aid of the Help a Capital child charity at The Roundhouse in Camden on Thursday night.

First up, Jessie showed off her newly-black crop with a matching silk dress that featured a a VERY wide waist-deep plunging neckline that showed off her curves.

The sexy halterneck-style frock by Camilla and Marc was also backless, showing off some major amounts of skin.

But not as much as the S&M-inspired outfit she chose to perform in. THAT's where it got kinda crazy in a stappy leather top Madonna would be proud of.

The event was hosted by JLS and Capital London Breakfast presenters Dave Berry and Lisa Snowdon.

Other star guests included One D's Niall Horan, ELiza Doolittle and Little Mix.