Emma Watson's Number One Beauty Rule

It's a colossal tribute to Emma Watson's style and beauty that she's quickly built a name for herself in fashion, and is no longer solely defined by her role in the Harry Potter franchise (ahem, Rupert Grint). The face of Lancme, Emma recently dished on her favorite beauty products and tips to Teen Vogue -- including her most important beauty rule.

"I always take my makeup off before bed. Always. (maybe not always... but i TRY. always.)," the British beauty reveals.

Emma Watson 'Sexier' and 'Bolder' With Pixie 'Do

She also shares her surprising secret to amazing skin -- just being "happy."

"My top tip to keep my skin gorgeous... keeping my stress levels down... eg. Doing things that make me happy. (being happy sorts out most problems)," she says.

Emma Watson's Magical Commercial

As for what's always in her handbag?

Apparently her and Nicki Minaj have at least one thing in common -- an obsession with pink lipstick! But in Emma's case, it's a predictably more muted color -- Lancme's Rogue in Love lipstick in Corail.

To check out more of Emma's favorite beauty products, and to see who her celebrity style icons are, click here.

HOT PICS: Two Looks, One Star | Like TheInsider on Facebook | Follow us on Twitter