All is not well on the Upper East Side as we enter the landmark 100th episode.

Blair Waldorf (Leighton Meester) is about to enter a marriage with a prince while still harboring feelings for Chuck Bass (Ed Westwick), Serena van der Woodsen (Blake Lively) has discovered she’s back in love with Dan Humphrey (Penn Badgley) and to buy time is unnecessarily keeping up her charade with Lonely Boy, who himself seems unsure of his own feelings for Blair (the guy wrote Blair’s fiancé’s wedding vows!). It’s a recipe for a big ol’ mess and guess what – we know how it all crumbles!!

Of course Gossip Girl herself has sworn us to secrecy, but that doesn’t mean we can’t tease. Here’s what you should know about the big wedding episode on January 30:

Stop the wedding!

Credit: Giovanni Rufino/The CW 2012 The CW Network Photo: Blair and Chuck Meet Before the Wedding in Gossip Girl Season 5, Episode 13: "G.G."

There’s a good number of people who aren’t on board with Blair marrying Louis (Hugo Becker). Serena knows how Blair really feels about Chuck and Chuck doesn’t want the love of his life to make a terrible mistake. And while Louis’ sister Beatrice may have admitted defeat, her devious priest lover is still conspiring against the prince – but in the end you’ll be surprised over who the biggest champion of true love actually ends up being. It’s definitely a shocker.

The b*tch is back!

Credit: Giovanni Rufino/The CW 2012 The CW Network Photo: Georgina Sparks as an Altar Girl in Gossip Girl Season 5, Episode 13: "G.G."

In times of despair you can always trust Georgina (Michelle Trachtenberg) to add some Sparks to the chaos. Proving that she’s certainly not domesticated, Georgina comes up with a devious plan (or two) to sabotage Blair’s big day. Why? Does Georgina Sparks need a reason beyond boredom? Stay tuned – this time Georgina may actually reveal a motive.  

Here comes the bride

Credit: Giovanni Rufino/The CW 2011 The CW Network Photo: Serena, Blair, Nate, Ed, Dan, and Louis in the Dream Sequence on Gossip Girl Season 5, Episode 13: "G.G."

Make no mistake: Beyond the Marilyn Monroe homage at the beginning of the episode which lets us inside Serena’s head for a minute, there are no dream sequences in this episode. Dresses have been chosen, flowers have been picked, and a walk down the aisle is inevitable. As any TV-watching person has seen before, there are still plenty of opportunities for things to go wrong once a couple hits the altar, but will Chuck go all The Graduate on the future monarchs of Monaco? Come on, like we’d tell.

Emotions run wild

As with any wedding, it’s hard not to get caught up in the extreme emotions of the day. There’ll be laughter, tears, and a reference to a Wallace Shawn classic that’s sure to make you giggle. And in the end, as much as you may think you have the 100th episode figured out – you’ll never see the last 10 minutes coming. That’s a promise.

 xoxo

Ok, what do you think will happen? Speak now, or forever hold your peace!

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