Credit: PPNY/GSNY/Splash News Photo: Michelle Trachtenberg Films Gossip Girl at a Church in New York City on November 9, 2011

Wednesday, November 9, was a BIG day on the Gossip Girl set, as members of the cast assembled at St. James Church in NYC for the wedding to end all weddings!

While only the extended cast was seen in costume ― tuxes on Cyrus and Blair’s Dad, Harold! Penelope in a dress and heels! ― Leighton Meester (Blair), Blake Lively (Serena), Penn Badgley (Dan) and, yes, Ed Westwick (Chuck) were all spotted entering and exiting the church throughout the day!

Apparently this royal wedding is coming whether we like it or not!

But what’s this? Perhaps an unwanted guest?? Yep, rumored attendee Michelle Trachtenberg (Georgina Sparks) was also there... dressed as an altar girl! WHAT? Our heads are spinning too! We got our hands on the first on-set pic of that, and we’re dying to know what all it will entail. Perhaps Georgina feels indebted to Dan and conspires to ruin Blair’s wedding so his true love can be his??? Or, maybe Georgina is just up to her usual wickedness in service of her own ends! That lady...

Credit: Mr Blue/WENN.com Photo: Amanda Setton Films Gossip Girl at a Church in New York City on November 9, 2011

To top off the excitement, rumblings on Twitter detailed a certain dress fit for a princess may have been spotted coming out of the church too... in a Vera Wang garment bag, no less! Let’s face it, we may want this wedding to die, but the dress? The dress we gotta see!

Sources: E! Online, Twitter

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