Dillion was born July 18, weighing 8 pounds, 10 ounces.
Anderson, 33, and Poueu, 27, started dating in 2010 during the ninth season of the weight loss reality series before marrying in April 2012. Over a year later in May, the couple announced their split.
"It is with great sadness that my marriage to Sam Poueu is ending," Anderson said of the split. "Thank you in advance for respecting our privacy during this difficult time."