Glam Girl Brittany wrote, asking about Blair's lingerie in the Gossip Girl Christmas episode. The red polka dot babydoll is from Victoria's Secret (shop it). The long lace sleeve robe Blair wore on an early episode as well, and I have a niggling feeling it was Oscar de la Renta, but I'm not positive. Here are two alternatives you might consider:
Jonquil "Jenna" Long Robe
$39.95 Advantage Bridal
Blair's Lingerie in Gossip Girl "Wild Brunch"
Blair's Gold Christmas Dress in Gossip Girl Episode "Roman Holiday"
Blair's Lace Stockings in Gossip Girl