Bill Klein and Jennifer Arnold
03/12/2013 at 08:00 AM EDT
Dr. Jennifer Arnold and Bill Klein, also known as TLC's The Little Couple
, have brand new monikers: mom and dad.
The reality stars, both of whom are little people, have adopted a 3-year-old boy who also has a form of dwarfism.
"We are thrilled to announce that we have adopted a beautiful young boy from China," the couple said in a statement to PEOPLE. "We are so proud to welcome William to our family and look forward to bringing him home."
On their TV series
last March, the couple explored adoption after their surrogate suffered a miscarriage.
"My entire life, even before I met Bill, I always thought, 'Oh, I'd love to adopt a child who is another little person,' " Arnold said on the episode. "And Bill and I talked about it after we got married, and I think we both realized we both would like that."
Fans can follow the couple's adoption journey on the new season of the show, which premieres April 30 at 10 p.m. ET.