Kim Kardashian, 40, just set a new summer trend. The KKW Beauty founder stepped out in a super sexy slip dress with a pair of sky high stiletto sandals and a casual baseball hat en route to dinner in Rome on June 29. The olive green hat was an unusual pairing with the sexy ’90s inspired look, which included a vintage cherry print dress from John Galliano‘s 2003 collection from Dior, along Manolo Blahnik shoes. Athleisure is clearly here to stay, even for sexy evening looks!