Rebecca Black is back, and this time she wants you to know it's Saturday.

Her latest single, 'Saturday', is the followup to the notorious hit 'Friday', which went viral after it was posted online and heavily mocked for its simple lyrics.

Black began hinting at the release of her new music video via Twitter late last week.

Naturally, the video was posted online on Saturday. By noon Sunday it had already garnered more than four million views on YouTube.

'Saturday' is loaded with references to the 2011 hit and includes the lyrics: "Yesterday was Friday, today is Saturday. We're gonna live like there's no tomorrow."

Following the release of 'Friday', which was widely panned as the worst song ever, Black left her California high school to be home-schooled instead, after she became the target of bullies.