Britney Spears and husband Kevin Federline are expecting their second child together, Britney told David Letterman during a visit to his show on Tuesday.
Don't worry Dave, it's not yours, 
The singer joked.
Oh. Well, I think that's good news for both of us 
Letterman responded, according to a show transcript.
The comedian went on to ask Spears:
So, we've established now that you are in fact pregnant, is that right? 
Yes, sir, 
she answered to wild applause from the studio audience.