Glee wedding alert! But who's heading down the aisle?

First pic of the Glee wedding posted on Twitter by director Ryan Murphy

Glee fans will already know that a wedding is on the cards for season four of the hit show, and now we've been treated to our first sneak peak of the nuptials.

Glee director Ryan Murphy posted a snap on his Twitter account of Heather Morris, who plays Brittany, and Chord Overstreet, who plays Sam, dressed in wedding attire and holding bouquets along with the caption: 'The Wedding Of The Year'.

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It's widely thought that it'll be the show's main couple, Rachel Berry (Lea Michele) and Finn Hudson (Cory Monteith), that will tie the knot, but this latest behind-the-scenes snap could suggest otherwise.

But knowing Glee as we do, this shot could be taken from a fantasy sequence, or perhaps Brittany and Sam are a little overdressed as a bridemaid and groomsman.

What do you think is going on in the photo? Who would you like to see get married in the Glee wedding? Let us know in the comment box below.

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