What? It's a good question. At first we thought this all-white ensemble was a jumpsuit, but on closer inspection, it looks like Nicole has chosen to pair her skinny harem jeans with a floaty silk top. Not even her hot pink lipstick and top knot can distract from these trousers.
Where?X Factor bootcamp, Liverpool, 18 July
Verdict? Is Nicole's unique look cool and quirky or just plain wrong? Let us know by voting in the poll below and see more from the star in her style evolution below: