Forget what you know about pink. It's undergone a retro overhaul thanks to the FW15 runways, in fresh shades of bubblegum, salmon and peach. At the top of the agenda? Sweet '60s shifts to wear day or date-night. See how Dolce & Gabbana won the catwalk, Saoirse Ronan made it her own in a cute Gucci number and what to buy to get in on the action...