Niki Taylor pregnant with fourth child

(CBS) Nikki Taylor is expecting her fourth child with husband Burney Lamar.

The 36-year-old model made the announcement on Twitter Wednesday.

Pictures: Celebrity baby bumps
Pictures: The Celebrity Apprentice

"Guess what's in this photo?" tweeted the star with a photo of her holding a sonogram picture, "Wooohooo!! YES!! We r expecting our 4th child!! So happy & blessed!!"

The couple, who married in 2006, already have a 2- year-old daughter named Ciel. Taylor has 16-year-old twin boys, Hunter and Jake, from a previous marriage.

Taylor recently starred in Donald Trump's reality show "The Celebrity Apprentice" and was the thrd celebrity to hear,  "You're Fired."