Survivor's Rob & Amber Mariano Expecting Fourth Child

Rob Mariano and Amber Mariano seen during FX and NGC Press Tour at Ritz Carlton in Pasadena, Calif. on January 9, 2007 Rob Mariano and Amber Mariano seen during FX and NGC Press Tour at Ritz Carlton in Pasadena, Calif. on January 9, 2007

The tribe of “Survivor” stars Rob and Amber Mariano is growing!

The 38-year-old, known to fans of the CBS show as “Boston Rob,” announced that wife Amber was pregnant with their fourth child on Twitter.

“My wife Amber is so hot, I can’t keep my hands off her… Here is to 2014!!! #4,” he Tweeted, posted along with a sonogram picture.

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The happy couple met while filming “Survivors: All-Stars” in 2003, where Rob proposed to Amber during the show’s finale.

Rob and Amber, who were married in April 2005, also competed on “The Amazing Race,” that same year.

The couple has three daughters, Lucia Rose, 4, Carina Rose, 3, and Isabetta Rose, 20 months.

-- Jesse Spero

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