On Saturday night, Tulisa paired her midnight blue gown with a matching statement necklace and peep-toe heels, while Nicole opted for a sheer LBD, with a missing sleeve.
On Sunday, the girls stepped things up a level in strapless mini dresses. Tulisa braved a bright pink number paired with matching lipstick and lace-up heels but Nicole went for gold in a metallic design and a glossy, berry pout. So who got their looks right on week one?
Let us know which judge's style you prefer by voting in the poll and see more highlights from X Factor 2012 in the gallery below: