Michelle Obama has set the record straight: She's not pregnant.

While in an interview this month with Oprah Winfrey in O: The Oprah Magazine, the First Lady put the baby rumours to rest.

Mrs Obama apparently has been the speculation of pregnancy buzz ever since Barack got elected, reports The Chicago Sun-Times.

In an excerpt from the interview, Oprah asked her: Well, you look better than ever - despite the rumors that you've got a baby bump.

To which, Michelle replied: [Laughter] I know - I was like, "Baby bump? As hard as I work on my abs?!"

Oprah continued: By the way, nobody would be happier if you were pregnant than Gayle King. Out of nowhere, she'll tell me, "Oh God. I really hope Michelle gets pregnant - and that it's a boy!"

Michelle said: [More laughter] Here's the scoop. Not pregnant. And not planning on it. Not pregnant. Not pregnant.