Feisty urban star and X Factor judge Tulisa doesn't seem like the kind of woman to choose practical underwear.
But on Saturday's show the brunette needed a little help to squeeze in to her spangled, skintight Jovani dress.
24-year-old Tulisa chose a £72 High-Waist Half Slip from the famous Spanx shapwear range to give her body a boost as she stood next to glamour puss judge Nicole Scherzinger.
The female judges have been waging a wardrobe battle each weekend as they vye for best-dressed in show.
This weekend Tulisa won a thumbs up from the fashion press for her heavily embellished lilac Jovani mini-dress while Pussycat Doll Nicole, 34, chose a ruffled leather cocktail dress by Emma Scervino.