Emma Roberts worked a sleek Nanette Lepore suit to celebrate the launch of the designer’s CFDA Design Series sunglasses collaboration with Vogue Eyewear in New York last night. (Roberts inspired the limited-edition sunnies, which are available for $130 at sunglasshut.com.) So who inspired the boy-meets-girl ensemble? “Diane Keaton,” Roberts told InStyle.com at the Sunglass Hut-hosted event. “She’s stunning at any age, at every age.” Along with Annie Hall, the young actress is a fan of Something’s Gotta Give. “My mom and I have watched that one literally at least a hundred times.” And it’s Keaton’s turtleneck in 2003 flick that’s the jumping-off point for Roberts’s cold-weather wardrobe. “I think there’s something so sexy about a turtleneck with a miniskirt,” she said. “That’s going to be my thing this winter.” We have a feeling that Diane Keaton would approve!

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