, Selena Gomez demonstrated how to turn the wardrobe staple into a sultry going-out 'fit.Yes, a white long-sleeve button-up isn't just sexy when stolen from your partner's closet for breakfast in bed or paired with jeans and a sharp bob à la Uma Thurman, though that's definitely still a fierce look. In her latest mirror selfie, the styled a crisp shirt dress—which she left unbuttoned enough to show off a peak at her bra—with classic gold jewelry and sky-high patent leather stiletto boots, giving a brand-new meaning to “legs for days.”While Gomez's button-up is nipped in at the waist and appears designed as a dress, one could get the same effect by tailoring an oversized Oxford or leaving it as is for a boxier, ultra-mini look, as Irina Shayk in a recent .