MONO magic Although it's sleeveless with a low square back, this look is still smart. Yes, it's alluringly sexy, but the below-the-knee length makes it pass for respectable! What's more, those vertical stripes are slimming. From cutting a dash at the races, complete with saucy hat, to going out to dinner, black and white is a classic combination. This dress is also an answer to what to wear to the office on a blazing hot day. AUTOGRAPH VISCOSE DRESS £59 COLLECTION HAT £15, M&S 046 | AUGUST 2017