Dannii Minogue has confirmed she is pregnant with her first child with boyfriend Kris Smith.

The X Factor judge made the announcement on Twitter.

“Woo hoo I’m gonna be a mummy!” the Telegraph quoted her as stating.

Also, a spokesman for the X Factor star confirmed: “Dannii and Kris are very excited and can’t wait to start their family in 2010.”

He added: “Dannii had her 12-week scan this week and was given the results today with the all-clear to make an announcement.”

Meanwhile, Minogue’s sister/singer, Kylie, expressed her joy.

She Tweeted: “OMG OMG OMG Perfect!!!! So happy!!! A new Minogue!”

Minogue and Smith have been dating after they met in 2008 during a holiday in Ibiza.