I've just seen they're booked on 2 night in March in France, but there's no mention to this, or to any European gigs on their calendar I send them an email via their website - I hope the concerts are still on!
I really like those guys (and that girl!) - their sound is pure to the bone
I looked at their myspaceprofile, and their upcoming shows from 10 january to 18 august doesn't show any visits to Europe. Sad to say. I like them very much too. And it could be fun to see and hear them live. www.myspace.com/carolinachocolatedrops