The Little Couple Reveals How they Named Their Son

Becoming a family was always a dream for reality television stars Bill Klein and Dr. Jennifer Arnold of TLC's The Little Couple.  And now, mom gets to have a name in the house she's always wanted.

"When Jen and I met she started calling me Will," Klein tells PEOPLE, laughing. "I said, 'My name is Bill,' but at least for a weekend she called me Will until she finally gave up."

When the couple adopted their son William Rijin, they already knew what his name would be when they welcomed him home to Houston, Texas.