Kristin Cavallari is said to be furious that the sex of her baby has been revealed by her partner’s teammate.

The 25-year-old star and Jay Cutler are expecting their first baby and yesterday, Jay's Chicago Bears teammate Earl Bennett announced on ‘The Boers and Bernstein Show' radio show that they are having a boy, leaving Kristin fuming.

It's a boy! Chicago Bears player Earl Bennett spilled the beans that reality star Kristin Cavallari and her fiancé Jay Cutler are having a boy

A source told Hollyscoop.com: “They are not happy that something so personal was revealed on a radio show, especially Jay - he didn't want anyone to know what they were having.'

Speaking on the radio show, football player Eric said: 'New toys, a baby on the way--he's having a boy-and, you know, I'm excited for Jay. It's a great time.'

Afterwards, the show's hosts revealed his blunder, declaring: 'Jay's having a boy. I don't think anybody knew that before then.'

VIA: DAILY MAIL