SKIN: Firstly add foundation to your skin make sure its your skin tone, i recommend Maybelline's Mineral Power Natural Powder Foundation it gives more of a natural effect.
Add a cherry colour blush to your cheeks, i recommend Maybelline's Expert Wear Blush
EYES: Add a black eyeshadow like Maybelline's Expert wear eye shadow's duo, now this is important do not go over board! Look at Demi's picture it's lightly over the eye lid.
Now add a black eyeliner, i recommend: Maybelline's Unstoppable eyeliner.
Now add black masacara lightly! Use mascara like: Maybelline's Define a Lash.
LIPS: Add a rosey/pink lipgloss like Maybelline's Shine seduction glossy lipcolour.