It's March, which means it's time to get mad: March Madness. Get it?

We're back this year with what it sure to be a fierce competition between fandoms, broken between battles until we finally crown one base as the true reigning winner's of the 2016. But who will prove to be most passionate for their faves? We shall soon find out.

In this round, it's a match-up between the fanbases of two deeply beloved girl groups: Fifth Harmony and 2NE1 — and they're got lots of reasons to be excited about their faves.

For one thing, 2NE1 just staged a jaw-dropping comeback on the stage of the 2015 MAMAs at the end of last year. And while there aren't any definite plans for their return this year, birthday girl CL has certainly been making waves as a fashion It Girl and soon-to-be solo superstar in the West. Fifth Harmony, on the other hand, just dropped some major news on their Harmonizers: Not only did they get to work, work, work with their fiery new single "Work From Home," but they're heading out with a new album this May called 7/27. It's safe to say they've only just begun having their fun in 2016.

But here's the real question: Which of the two will move onto Round 2? Place your vote below — this round will end on March 9 at 11:59 PM EST.

The evolution of Fifth Harmony, from X Factor USA to today:

2NE1's Fiercest Looks