Stunning Sports Illustrated star Ellie Thumann rocks her vintage Cavalli mini-dress, which sports long sleeves, a short skirt — and a completely open front with only a double bralette for coverage.

After Meghan Markle sold out the perfect office shirtdress, Selena Gomez demonstrated how to turn the wardrobe staple into a sultry going-out ’fit. Yes, a long-sleeve white button-up isn’t just sexy ...