Mary-Kate and Ashley Olsen have made oversize shades a signature part of their style, so it’s no wonder that the superstar designers have chosen to add vintage-inspired shades to their luxury label The Row. And though The Row’s sunglass collection won’t be hitting stores until spring, Mary-Kate is already showing it off. The designer secretly debuted an oversized square frame — one of four styles that make up the collection — at the Burberry runway show during London Fashion Week. The other three styles include a classic metal aviator, vintage-inspired brow-line and a pair of round shades taken from the ’60s, according to WWD. “We’re testing the market first and obviously these are four very different silhouettes, so we’re seeing what people are responding to and we’ll open up a couple more silhouettes for fall,” Ashley tells WWD of the collaboration with Linda Farrow Eyewear, who is already responsible for Bernard Wilhelm, Dries Van Noten and Jeremy Scott’s edgy eyewear. Mary-Kate and Ashley have already made a mark in the accessories market with jewelry and shoes for their contemporary label, Elizabeth and James, but adding sunglasses proved to be a new challenge for the designers. “Designing eyewear was definitely more complicated than we thought, and of course, we wanted to be extremely hands-on,” Mary-Kate tells WWD. Sunglasses for The Row are expected to hit high-end department stores for spring with prices ranging from $325- $390. So far, we love what we see!