It's going to be a big night in the Bravo Clubhouse, in case you've been hiding under a rock. The one and only Lady Gaga will hang out with Andy Cohen and company at 11/10c on Watch What Happens Live. And it's guaranteed to be one of the most memorable shows ever. Need proof? Just ask Andy.

In a special message to viewers, he explained why you can't miss out.

Preview

Andy’s Little Monster Message

"We're going to end the saddest day of of the year with a smile, because she'll be here," says Andy, referring to the anniversary of 9/11. "And I don't know what she's going to wear, we're taking all of your questions, I'm freaking out."

Andy also gave another exciting warning: Gaga will be playing Plead the Fifth!

What question do you hope that Andy asks Gaga? Tell us in the comments.

Related Stories
•Lady Gaga's 5 Most Fearless Moments
•PHOTOS: Lady Gaga's Wildest Looks
•Lady Gaga Will Appear on Watch What Happens Live