The HQ version of Avril's upbeat, funky, pop-rock-like new single has leaked! It's called "Girlfriend" and if you loved the sort of music Avril has shown us before [like Sk8er Boi or Complicated], then get ready to here something slightly different. The rock princess is going for a slightly poppy-rocky sound. The song sorta reminds me of the cheer-leading hit "Hey Mickey." But, I won't be the judge, download the song below!