This is Pixie Lott and I predict great things are ahead for her.
She is a singer and has the voice that the 21st Century demands of a girl singer, I.E. she has that Amy/Adele/Duffy "smoked too many cigarettes" sound.
Her first single comes out in a couple of weeks and the song is well chosen and it's easy after a couple of listens to find you're humming it. One of the producers involved on her album (out in September....yes they have her career planned out in military detail) is Daniel Bedingfield and the single does sound like his sister could be singing it. A video that looks expensive and will find itself being played on all the right channels will only underpin the music.
Today she's featured on the BBC home page (how I found her) and she has recently both appeared on Radio 1 and performed a "Saturday Session" for Dermot O'Leary on Radio 2 where she covered "Never Forget" by Take That. You can find the video here
As you can see by the photo she is very pretty and allied with her voice and music I expect to see her featured heavily in next year's Brit awards!