'Little Couple' Jen & Bill Adopt Daughter Zoey

Two-year-old Zoey is officially a part of the Little Couple family!

ET can confirm that TLC stars Dr. Jennifer Arnold, 39, and husband Bill Klein, 38, adopted their long-awaited little girl from India today.

Pics: Celebs and Their Cute Kids!

The couple released a joint statement to People, detailing their joy after months of wishing and worrying.

"We are thrilled to announce that we've picked up our beautiful daughter, Zoey, from India today," Bill and Jen told People in a statement. "Our hearts have grown in the past six months as new parents to William, and we are excited and overjoyed to welcome Zoey to our family and watch Will becoming a loving big brother."

Video: 'Little Couple': Bill & Jen Prepare Will For Zoey

The proud parents' journey towards adopting the toddler (who has a form of skeletal dysplasia like her new mom, dad and brother) is chronicled in the season finale of The Little Couple airing Tuesday at 10 p.m. EDT on TLC. Click the video above for an exclusive sneak peek at the all-new episode!