Jessica Stam was the picture of summer sophistication as a speaker at last night’s U.N. Social Innovation Summit. She sported her pixie cut and pink tweed Oscar de la Renta with model poise and confidence. The Resort 2014 design takes what could have been a mature dress and gives it a youthful touch that’s perfectly appropriate for Jessica. What better way to lighten up tweed than with sweet floral lace? With most girls in their twenties posing on the carpet in cutout shorts and fringed vests, it’s nice to see someone up the style stakes. She never disappoints. Inquire at Oscar de la Renta.