After years of rocking bright red lips, the music star was tapped by L'Oreal Paris to join their A-list roster of celeb spokeswomen.
Us tip: The trick to flawless lipstick application? A baby-smooth pout! Slough away chapped skin with a gentle lip scrub like Sara Happ's -- not only is the formula made from sugar, but there's several, delectable flavors to choose from. ($24, beauty.com)