Ryan Seacrest confidently announced on his Los Angeles radio show this week that Britney Spears is pregnant with her third child.

The American Idol host told listeners the happy news on Wednesday, citing a “reliable source.”

Earlier in the day he had posted on Twitter: “I heard a rumor about brit that I want to investigate before I give more deets!!”

But it seems that Ryan's investigations may not have gone far enough as Britney's people have shot down the claims.

A rep for the pop star tells PerezHilton: "She's absolutely not pregnant. I have no idea where this ridiculous rumour came from.

“Ryan has communication with our camp and could have checked this before saying it."

Should the pregnancy gossip be on the money, the father could be just about anyone involved with her current Circus tour, if you believe recent reports about Britney's big top bed-hopping.