Julianne Hough just pulled back the curtain on her beauty routine, and we should have known the Dancing With The Stars icon was hiding something good. If you’ve been eyeing Julianne’s camera-ready flutter during her hosting moments, you can stop wondering whether it’s extensions. She’s doing what the rest of us can too: swiping on a nightly serum onto her lashes and letting it work while she sleeps. In a recent chat with Marie Claire about her wellness and beauty routine, Julianne gushed that her eyelashes are “insane now,” and the secret weapon is already sitting in many savvy medicine cabine...