rap/indie? Forever 21

I heard a song in forever 21 the other day - it sounded like Kate Nash or Lily Allen but I don't believe it was either of those girls. It was an indie sounding song by a woman singer, but the lyrics were almost rap lyrics...something about getting down, etc, etc. Anyone know what I'm talking about or am I crazy? HELP! thanks so much. Cheers.

It could be the band The Go! Team. I've been hearing their song "Grip Like A Vice" in a lot of stores lately.