Leighton Meester and Blake Lively are All The Pretty Sources in GOSSIP GIRL

The CW has sent over “All The Pretty Sources” teasers, a preview for an upcoming episode of Gossip Girl. Looks like Blake Lively’s Serena is busy at work making preparations for Leighton Meester’s (Blair) wedding. Taking its name from a novel (All the Pretty Horses) by the great Cormac McCarthy, “All The Pretty Sources” is set to air on November 21st. We are going deep into the Gossip Girl future today, but do recall that we have you covered and that we’ve already brought you the goods for  next week’s episode,  “I am Number 9″, in the form of the a gallery of images and the tv teaser. Along with the promos below we also have the official  episode synopsis, so get to them!

Gossip Girl All The Pretty Sources Episode Summary - SERENA PLANS A DREAM BRIDAL SHOWER FOR BLAIR — Serena (Blake Lively) is hard at work planning a dream bridal shower for Blair (Leighton Meester), but it should come as no surprise that Serena has to plant some false information about the shower in order to keep Blair from finding out all the details. Chuck (Ed Westwick) and Dan (Penn Badgley) decide to spend the day together to distract themselves from the fact that they didn’t make the invite list for Blair’s shower. Nate (Chace Crawford) and Serena find a silver bullet in Diana’s (guest star Elizabeth Hurley) war against Gossip Girl, but struggle about whether to use it or not. Kaylee DeFer, Kelly Rutherford and Matthew Settle also star.