It's Rebekah like you haven't seen her before. The Vampire Diaries takes us back hundreds of years here.
Klaus and Rebekah are featured in this photo, from way back in the day. It's a scene from "Ordinary People."

The Vampire Diaries Season 3 Episode 8 Quotes

Some days, it's a miracle you're still alive. Boy.

Mikael [to Klaus]

Alaric: Careful where you shine that thing. Bat hate the light?
Elena: Wait... what?