Tulsia in a sheer dress Tulisa Contostavlos managed to deflect the spotlight onto her curvy derrière as she ended up flashing it on tv during “X Factor”. Wearing a figure-hugging sheer black dress, Tulisa ended up showing off her bottom as she jumped for joy after learning her act Little Mix has progressed to the semi-finals. Under the bright studio lights, the North Londoner's G-string was clear to see through the sheer material. The singer and “x Factor” judge, over-exposure comes after she declared she would never strip off for a magazine shoot. She told The Sun: “I'd never get naked in a mag. I don't care how much money. You can offer me millions. I'm not a prostitute. I'm sorry, naked? That's no diss to anyone who does it, but I'm a musician, I'm not selling my body.”