The couple were worried about how Eddie's sons - Mason, seven, and Jake, four - from his first marriage would react to the big day so consulted with a therapist ahead of their April 22 ceremony.
Eddie explained to website People.com:
"We wanted to make sure LeAnn and my wedding was not only ours, but their party too.
"The kids come first in everything we do. They were beyond excited to celebrate us all coming together as a family."
LeAnn - who refers to herself as a "bonus mum" to the children ' added: "It was really important for us to figure out how to explain it.
"And they were great. They were super excited and wanted to know what they could do."
The couple even set up a special table at the wedding for Mason, Jake and two of their friends, which had a 'Star Wars' theme.
Singer LeAnn also said that for her, the ceremony itself was what made her feel the family was complete.
She added: "I've always felt an overwhelming sense of responsibility to them. But in that moment when I looked down at them, when we were saying our vows, it became more real than it had ever been. They don't have to be my blood children to be truly loved."