First aid kit
love/indie/folk
They're 15 and 17, these two sisters Johanna and Klara from Sweden, but don't let their sweet looks fool you, these girls can really play and write great songs. I've just seen them live at Crossing Border festival and I dare say they were the best performance I've seen in those 3 days. Here are a few links so you can check it out yourself:

Amazing Fleet Foxes cover
"You're not coming home tonight"
"Our own pretty ways"

Just make sure you keep an eye on this ones, if you get the chance to see them live, don't hesitate.