The 20-year-old singer will release the song on September 4. It will serve as the trailer track for Lott's currently-untitled second studio album.
'All About Tonight' is an upbeat song that mixes club beats and synths. Lyrics include: "Yeah the night is alive, you can feel the heartbeat/ Let's just go with the flow, we've been working all week/ Tomorrow doesn't matter when you're moving your feet/ It's all about tonight."
Lott recorded the music video for the single in Los Angeles at the end of last month and has since released teasers online to promote the clip.
The 'Cry Me Out' singer has told Digital Spy that she has worked with big-name artists and producers for her new album, which is expected later this year.
Listen to 'All About Tonight' below: