If the 900-gram cashmere from Fall hadn't already rendered it obvious, The Row's Resort collection certainly made the point: Ashley and Mary-Kate Olsen are fabric obsessives. This time around, Sea Island cotton, natural linen, seasonless double-face wool, and a supple suede shared the spotlight with their luxuriously hand-knit cashmere sweaters. Just as significant as the designers' penchant for fine materials is their rejection of trendiness. That's not to say the Olsens aren't responsible for starting trends—they've been doing that since before they were NYU coeds, and if you see women wafting around the streets of Manhattan in caftans this summer, Ashley and Mary-Kate's Spring '14 collection is the reason why. But they don't go chasing fads the way other designers of their generation tend to do.

Perched on leather oxfords by the cobbler Enzo Bonafè, their Resort clothes hewed quite classic. Pants pooled at the ankles and split bell sleeves extended almost past the fingers, but there was a tidiness to pieces like a shell pink sleeveless sheath dress and a tipped cashmere short-sleeve sweater worn with belted wide-leg trousers that bordered on conservative. Resort is an important selling season, so it makes sense that there was an emphasis on elegant simplicity. But the collection got more interesting when the Olsens let their freak flag fly just a bit, as they did with a divine light pink knit mohair and cashmere coat cinched at the waist with a skinny black mink scarf worn as a belt.