United Kingdom, April 17 -- Arie Luyendyk Jr. and his wife Lauren Burnham Luyendyk are expecting a baby girl.

The 43-year-old auto racing driver and the 33-year-old internet personality held a gender reveal event, which was attended by their three children - Alessi, five, and three-year-old twins Senna and Lux - family and close friends.

During the special occasion - which they filmed and uploaded to YouTube and Instagram - Arie admitted he was convinced the baby was a boy.

He could be heard saying in the video: "I think it's a boy. And I thought it was a boy the entire time. If my instincts are wrong, I'm going to be so shocked. I'm wearing blue because I think it's a boy. This pregnancy feels different."

Shortly after the TV persona...