We love when a celeb steps out in a low-cost ensemble, so of course we flipped when we saw singer Demi Lovato’s on the red carpet in a dress that won’t cost you an entire month’s rent. In fact, it will cost you only one Benjamin, to be exact. At the X Factor finalist’s party last Monday, judge Demi was spotted in this Topshop Seam Waist Shift Dress ($100) — perfect for working the upcoming holiday party circuit. Its structured hourglass shape and precise tailoring are the secret here, making it look much more expensive than it really is. Demi kept the accessories to a minimum, but toughened up her look with a leather jacket and a blazin’ red lip. Love her look? You can get her exact dress right now.