I Love Fast Cars And Fucking Boys.

I need help with a song name.

I was at the Gym today, this dance song came on, I couldn’t see the song name on the screen as I didn’t have my glasses on, it has a female vocalist and the only line I can remember is the start of the Chorus, went like “I am a creature of the night” Or something like that. Its a RECENT song, maybe a year or 2 old. I googled it, wrote to Yahoo! Answers, no avail.

Can you please help me?