Shoe label Jour & Nuit, which means day and night in French, is all about versatility. The straps - the simpler ones made for day, the more elaborate jeweled, strappy ones for night - are easily changeable with a few clicks. But who says there are any rules? Wear the embellished straps for day and the pared down straps for night, if the occasion strikes. Be prepared to pay for such options though - the heels run $375-$725. Try to think of it as buying two pairs of shoes. Either that, or pretend you're Beyonce who rocked a pair at the Grammys, since there's a pretty good chance she got them gratis or borrowed them for the show. Look out for these quick-change artists in a boot version for fall.