Waaaaaay back in September last year, Marc Jacobs sent models down his Marc by Marc Jacobs SS14 catwalk with aqua eyelids and, ever since, the blues have been catching. The make-up trend rides a wave of popularity (PJ Harvey's rad turquoise lids on the cover of a 90s i-D magazine, your nana's blue lined lids in the 80s, etc etc, insert any decade), and now, more than ever it's having a moment. Here's the girls making us fall for their baby blues...