Music video by description?

I recently watched a music video but I can't remember who it's by, or
what song it was. It starts out with a girl blond girl (teenage) in a
white button-up shirt, red skirt, red socks and white shoes walking in
the middle of the street. She gets to a certain point, looks up,
screams and drops a piece of watermelon. From there til the end of
the video, she's running through town. It occasionally goes to the
band playing with cheerleaders around them. At the end of the video,
the girl wakes up from laying in a field in her cheerleading outfit.
Someone calls to her that the coach is waiting. She gets up, stands
around for a moment, then runs off to join the cheerleading squad.

Who is this music video by? What's the song?

Thanks