Gossip Girl's 100th episode airs Monday. Maybe you've heard?

The anticipation has been building throughout the season as the royal wedding milestone event nears. For all the promos, sneak previews and clips from "G.G." released so far, visit our Gossip Girl video section.

Now let's talk spoilers, people. A mega-bombshell in particular.

Michael Ausiello of TV Line writes, "There is a ginormous revelation during the episode that could go down as one of the show’s biggest, most jaw-dropping twists in history. And it’s not directly tied to the nuptials."

How's that for a tease?

What revelation might that be? The true results of the paternity test? The true author of Louis' vows? Could it the "bad thing" Serena tells Dan she did as they walk down the aisle - and what's that? Is Georgina involved?

So many questions, so few answers for another four days. But until then, we want to hear what you make of this supposedly epic reveal! Sound off with your theories, predictions and opintions below!

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.