Plowing forward in their fashion endeavors, Mary-Kate and Ashley Olsen have designed a range of sunglasses.

The movie-star twins, who run two successful fashion labels, have created four vintage-inspired styles for their fans. The designs, being launched in collaboration with top eyewear maker Linda Farrow, will be sold through their luxury label The Row.

The line—described as “sleek and sassy”—will hit the shelves in spring 2010 and will range from $325 to $390 each. The collection will feature a classic aviator, 60s inspired round glasses, an oversized square frame, and vintage inspired brow-line shades.

The 23-year-olds, who have made oversized shades a signature part of their style, plan to see how the designs sell before expanding the range next year. Ashley told 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 autumn.”