Speaking to host Stephen Sackur, she said:
[Image via Instagram.]
This might be the funniest thing we've seen Justin Bieber do!
Check out the video (above) of Justin doing the Top 10 on David Letterman!
We're a little disappointed that he's been in the slammer, but, we lost our minds laughing when he flatly said that he just wasn't a fan of Kevin James!
If U weren't a Belieber, are U one now??