We're just a weekend away from the most anticipated Gossip Girl musical guest ever (sorry, Sonic Youth): Lady Gaga!

Judging from our three sneak peeks, the theme of this episode, titled "The Last Days of Disco Stick," is all about "Bad Romance"--what with Dan dealing with the threesome-aftermath, and Serena and Tripp still tripping over their overwhelming sexual tension.

Plus: one diplomat's son is about to make a dangerous alliance on the Upper East Side, and it's not with Chuck Bass.

Check out the clips below!

In this first clip, Dan brags about his Olivia/Vanessa get-together to Nate, but Nate brings him back to Earth...



In this next clip, Blair and Chuck discuss her latest NYU takeover strategy and his latest business venture: wooing the sons of diplomats.



In the last clip, Lady Gaga makes her unforgettable entrance, and Blair seems to have something invested in the performance...





-Meghan Carlson, BuddyTV Staff Writer
Image courtesy of the CW