Survivor's Rob and Amber Mariano Expecting Fourth Child—See Their Sonogram Picture!

Reality star made the announcement on his Twitter feed on New Year's Eve

Survivor alums Rob and Amber Mariano will soon be a tribe of six members!

Mariano, 38, made the exciting announcement on Twitter that the couple is expecting their fourth child.

"My wife Amber is so hot, I can't keep my hands off her... Here is to 2014!!! #4," the Survivor: Redemption Island winner tweeted on New Year's Eve, along with a sonogram picture.

They met when both former Survivor contestants (Amber from Australian Outback and Boston Rob from Marquesas) returned to compete on Survivors: All-Stars in 2003.

During the show's live finale, Amber was declared the winner of the $1 million prize and scored herself a fiancé to boot after Rob dropped to his knee and proposed.

The reality twosome, fondly known as "Romber", tied the knot in April 2005 at the Atlantis resort at Paradise Island in the Bahamas.

In addition to Survivor, they also competed on The Amazing Race.

The couple has three daughters—Lucia Rose, 4½, Carina Rose, 3, and Isabetta Rose, 20 months.

Congrats to the family!