Full name: Louisa Rose Allen
DOB: April 29, 1989
Place of birth: Southampton, England
She won her first Grammy before she even released an album, after featuring on Zedd's massive tune Clarity.
She once went on a joy-riding spree at a music festival with Fall Out Boy's Pete Wentz and, between them, they managed to pilfer (and dispose of) enough golf carts to get a lifetime ban at St Andrews.
When she's in America, she regularly gets mistaken for kooky hotty, Zooey Deschanel