Reality show regulars Rob and Amber Mariano have become first-time parents. The couple, who met while competing against each other on Survivor: All-Stars in 2004 and also ran the seventh season of The Amazing Race, welcomed a baby girl on the Fourth of July at Sacred Heart Hospital in Pensacola, Fla. They named their 6-pound, 11-ounce daughter Lucia Rose. "Both mom and baby are healthy and doing great," says Rob, who married Amber in 2005. "Lucia is a great eater and sleeps a lot, but she tends to be a bit of a night owl like her daddy at times," he adds.