Credit: Giovanni Rufino/The CW ©2010 The CW Network Photo: Lily and Rufus in Episode 4.7, "War at the Roses"
Our favorite Upper East Siders let it all hang out this week, giving birthday party guests, a pop star, and one forgiving piano an eyeful. Check out our favorite OMG moments of shameless exhibitionism from Episode 4.7, “War at the Roses.”

5. Rufus catches Dan scheming


Oh, Dan. When will you learn that when it comes to scheming, Humphreys never prosper? You’ve got nothing to gain but your dad’s disappointment.

4. Colin and Serena hook up

As if their smooch wasn’t scandalous enough — Juliet now has Serena on tape macking on her teacher. Of course, when it comes to scandalous videos of Serena, this probably won’t even crack the top ten.

3. Blair and Chuck sign the treaty

Okay,  this is not so much scandalous as it is hilarious. We just love that the division of “marital” property includes all of New York. Well, they do think they own the place...

2. Blair’s humiliation

Blair probably wishes the tape of her off-key warbling was, as her minions speculate, a Nelly Yuki snuff film. After all, her worst nightmare is having the world see her as less than perfect...

1. Blair and Chuck hook up

OMG. We hope that’s a sturdy piano.