We got a major style jolt when we saw Nina Dobrev at a recent event supporting The Vampire Diaries - who was this sweet brunette in the knee-length, flutter-sleeve dress? Nina's been a burgeoning bombshell on almost every red carpet we can remember, and we weren't expecting this to be any different. Yet here she was, in a deep indigo Michael Kors Spring 2014 dress covered in crystals and an Edie Parker clutch, her hair half up and secured with what looked like a ribbon. Can you even get more good girl than that?

To be fair, the dress did feature a slit at the neck that allowed some skin to show, but the overall impact had a prim, ladylike vibe that we don't commonly associate with Nina. Scroll through to see more of her sultry looks, and then vote at the end: which do you prefer, sweet or sexy Nina?