Last year, we ran a super-sized competition to determine the greatest pop song in modern history, from the ’80s to today. Now, we’re back — and this time, it’s all about honoring the best and boldest in music videos.

This is it! Our final two contenders for Greatest Pop Video of the '00s have successfully clawed their way up to the top through their respective brackets. Who will bring home the crown? The time is now to decide.

Britney Spears' "Toxic" has put in some serious work, bitch: After winning in a head-to-head against Kelly Clarkson's classic break-up anthem "Since U Been Gone," the Piece Of Me superstar successfully soldiered right past classic teen dream rival Christina Aguilera's boxing-themed banger, "Dirrty," winning with 54% of the vote. But will Brit Brit be able to taste her poison paradise, or will she slip under?

The lovely ladies of the Moulin Rouge have emerged as something of a dark horse of the competition. After besting Rihanna's "Umbrella" with their seductive moves in the boudoir, P!nk, Christina, Mya and Lil' Kim fought over Mother Monster in a fierce battle against "Bad Romance," securing their spot in the finals at a massive 63% victory. But do they have the geechee geechee ya ya da da to beat Britney?

It's time for you to decide: Between Britney's "Toxic" and P!nk, Christina Aguilera, Mya and Lil' Kim's "Lady Marmalade," who had the most iconic video of the '00s? It's time to vote — the round ends on Wednesday, December 16 at 5 PM ET.

#TBT: Britney's Crossroads Premieres