Survivor Couple Rob and Amber Mariano Expecting 4th Baby

Survivor couple Rob and Amber Mariano are expecting their fourth child.

Mariano announced the pregnancy on Tuesday, Dec. 31, on his Twitter account together with a sonogram.

In the caption, he wrote: "My wife Amber is so hot, I can't keep my hands off her... Here is to 2014!!! #4."

The couple met on Survivor: All-Stars in 2003. They got engaged in the season's live finale when they were the only competitors left for the million dollar prize, which Amber won. In 2005 the two got married. In 2011, Rob won Survivor: Redemption. The two also competed as a pair twice on The Amazing Race, according to People.

The two are already parents to three daughters: Lucia Rose, 4, Carina Rose, 3, and Elisabetta Rose, 20 months.

When it comes to the woman domination in their household, he previously joked: "I'm definitely outnumbered now."

"But at the end of the day, it's exciting and fun," he added.