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Little Couple, Jennifer Arnold, Bill Klein, William Rijin Klein

Courtesy of TLC

Congratulations once again to Bill Klein and Dr. Jennifer Arnold!

The stars of TLC's The Little Couple are adopting their second child, barely two months after revealing they had adopted 3-year-old son William.

TLC confirmed to E! News today that 19-month-old Zoey, who has a form of dwarfismf like her new parents and big brother, is on her way from India.

"We're so delighted that Zoey will be joining our family and that William will have a little sister coming home very soon," Klein and Arnold first told People.

The Little Couple airs Tuesdays at 10 p.m. on TLC. Check out this exclusive clip from tomorrow's episode, in which Bill and Jennifer are getting ready to head to China to pick up William—and reveal they're adopting a daughter, too!