‘Survivors’ Rob Mariano and Amber Pregnant with Fourth Child

'Survivor' stars Rob Mariano and wife Amber are expecting their fourth baby together.

The proud dad-to-be announced the happy news to his fans on Twitter. "My wife Amber is so hot, I can't keep my hands off her... Here is to 2014!!! #4," he tweeted along with a sonogram picture. The couple already has three children

 Rob and Amber Mariano met on 'Survivor: All-Stars' in 2003.They competed against each other in the finale for the million dollar prize (which Amber won). Rob later won 'Survivor: Redemption Island' in 2011. The couple also battled together twice on 'The Amazing Race.'

The couple already have three children Lucia Rose, 4 years and six months, Carina Rose, 3, and Isabetta Rose, 1 year and eight months, reported the PEOPLE magazine.

Rob and Amber got married in the Bahamas in 2005. CBS telecasted a two-hour special about the wedding, titled 'Rob and Amber Get Married,' on May 24, 2005. After their marriage, Brkich took Mariano's surname, and the couple moved to Pensacola, Florida.

"I'm definitely outnumbered now," the 38-year-old dotting dad said of the woman domination in their house. "But at the end of the day, it's exciting and fun."

Rob also appeared in few television shows. He appeared in the 'All-Stars' episode of Canadian show Reality Obsessed, hosted by Murtz Jaffer and won first place in a competition that pitted him against James Zinkand (Big Brother 9 (US)), Jen Parker (The Amazing Race 12), and Jennifer Hoffman (The Apprentice (U.S. TV series)).