THE LONG AND THE SHORT OF IT

SAM does formal really well, keeping the silhouette lean, as in this blue lace gown with chiffon bow by Alessandra Rich, which she wore to the White House. She loves a high neckline, too: there’s no need for a necklace, and no embarrassing cleavage. Expect lots of long from her label – but while it’s a shape that works well on petite women, less so on those with curves…