The slip dress is back, in a big way. These sexy little numbers are actually incredibly versatile. For casual daytime wear, try layering one over a t-shirt or sweater and finish off your outfit with chunky sneakers. For the office, top it off with a blazer or cardigan. For evening wear, go for all-out sexy, with bare shoulders and strappy heels. The slip dress has long been a favorite of celebrities and we’ve rounded up their best looks below. Given its versatility, this is one staple that’s worth a splurge. But, in case your budget doesn’t have much wiggle room right now, we’ve included some lower-priced options as well.