And, the 21-year-old singer was a total knock out in a black halter-neck, floor-length, figure-hugging Calvin Klein Collection dress, which she teamed with gold stilettos and accessories.The lady proved keeping it classic works every time on the red carpet, as does a killer scarlet lipstick.
The beaming smiles? Definitely down to the fact her beau Calvin Harris was with her at the star-studded awards ceremony.
Reets couldn't refrain from sharing an Instagram pic of her and her man with Katy Perry and Ellie Goulding:
Take a look through this gallery to see who got all glammed up for the MTV EMA's 2013: