Model baby: Niki Taylor pregnant

May 19, 2011 at 11:54 a.m. ET

Supermodel Niki Taylor has chosen Twitter to make a major announcement: She is pregnant with her fourth child!

Gorgeous model mom Niki Taylor made a major announcement today: She is expecting baby number four!
Niki Taylor family

Taylor, who starred in Make Me a Supermodel and Celebrity Apprentice, spilled the beans -- where else? -- on Twitter.

"Guess what's n this photo?" she tweeted, linking to a snap of her holding an ultrasound image.

Taylor followed up with a link to the image above -- celebrating the news with her NASCAR driver husband Burney Lamar and their two-year-old daughter Ciel, writing, "Wooohooo!! YES!! We r expecting our 4th child!! So happy & blessed!!"

Taylor is also the mom of twin boys, 16-year-old Hunter and Jake, with first husband Matt Martinez. They divorced after two years. She met Lamar in October 2006, became engaged after three dates and wed in December.

Image courtesy Niki Taylor/Twitter