Cotton Midaxi Dresses at M&S Aeris Tie Front Backless Cotton Poplin Maxi Dress in Lemon Yellow Oh Polly As soon as @marksandspencer came back online I rushed to buy this dress!! Absolutely love the dropped waist and bubble hem Link on stories, I'm wearing a size 12 petite. # M&S's Pure Cotton Drop Waist Midi Dress Will Be a Viral Hit Who What Wear M&S just released a bunch of new spring dresses, here are 21 we think will sell out first AOL