VIDEO: Kelly Clarkson Talks Justin Guarini, Reba McEntire & More on WATCH WHAT HAPPENS LIVE

Superstar Kelly Clarkson stopped by the WATCH WHAT HAPPENS LIVE clubhouse last night. Check out clips from the appearance below including:

It wasn't her performance for the Pope, at the Super Bowl, or even for President Obama that made Kelly Clarkson most nervous but rather a more personal performance.

Singer Kelly Clarkson plays Plead the Fifth and sets the record straight about Justin Guarini!

Kelly Clarkson tells Andy Cohen what it's like having Reba McEntire as her mother-in-law!

About Watch What Happens Live

'Watch What Happens: Live' is Bravo's late-night, interactive talk show that features guests from the world of entertainment, politics, and pop culture. Hosted by Andy Cohen, the series includes lively debates on everything from fashion, the latest on everyone's favorite Bravolebrities, and what celebrity is making headlines that week. The show airs Sun-Thu 11/10c

Past guests who have joined Cohen in the Bravo Clubhouse include Sarah Jessica Parker, Tina Fey, Iman, Liam Neeson, Kelly Ripa, Jimmy Fallon, Anderson Cooper, Molly Shannon, Matthew Broderick, and Lance Bass.

Photo: Charles Sykes/Bravo