Kendra Wilkinson is having a boy.

The former Playboy Playmate, who is expecting her first baby with husband Hank Baskett, was thrilled to discover she is having a son during a routine scan.

Writing on her blog, she said: "I just left the doctor's office and I couldn't wait another minute to tell you guys. Hank and I are having a baby boy!!!!!!!!!!!! When the doctor told me I was just like OH MY GOD, I'm going to have a son!!!!! Today is certainly always going to be one of the most memorable days of my life!"

The 24-year-old blonde - who married the American football star at her ex-boyfriend Hugh Hefner's Playboy mansion in June - is determined to have a close relationship with her child, who is due on Christmas Day (25.12.09).

She added: "Whether this little guy is a jock or not, he's definitely going to be a mama's boy. And there's no doubt he's going to be a handsome one... just look at his dad!"

Kendra previously revealed she wanted to find out her baby's gender so she could plan for the new arrival.

She explained: "We can't wait to find out the gender so we can get more prepared."