Sia Is the New Face of MAC's Viva Glam Campaign

The world might not know Sia’s face very well, but her voice is immediately recognizable, and soon, her lips might be as well.

The Australian singer-songwriter has been named as the new face...er, lips...of MAC Cosmetics’ Viva Glam campaign, which is the conglomerate's charitable effort. The “Diamonds” songwriter touted the news herself on her Instagram with a striking image of her wearing her signature lipstick.