Leighton Meester is doing for blush what Blair Waldorf did for the headband; the perfectly pink cheek is becoming her signature. At last night’s Swarovski-hosted book launch for Gossip Girlcostume designer Eric Daman’sYou Know You Want It: Style-Inspiration-Confidence, the show’s star placed the happy hue on her apples and dragged it outward toward her cheekbones for contouring. I, too have been feeling a little rouge of late, and have been leaning toward liquid and cream formulations, like Benefit's Posie Tint, for application ease and a smooth finish. A few drops will take you a long way.