7-Year-Old Girl Nails Halloween Costume as a Mom

Lainie Griffin, 7, is one of five children in her family.

— -- An Indiana girl’s Halloween costume of a mom became an unexpected viral hit thanks to its authenticity.

Lainie Griffin, 7, is one of five children and has three younger siblings. When she told her mom, Jess Griffin, she wanted to be a mother for Halloween, Lainie had a clear vision of the look she wanted to achieve.

“She came up with the details like the baby on the leg,” Griffin told ABC News. “She came up with the sweatshirt and sweatpants and flip flops.”

Griffin said that with five children -- ages 10, 7, 6 and 4-year-old twins -- she often finds herself carrying a child or having one pull at her shirt. Griffin found it “humbling” to hear her daughter wanted to dress like a mom for Halloween.

It was Griffin who added even more elements to Lainie's costume that ring familiar to most parents.

“I filled in the details of the dark circles under her eyes and put the [fake] spit up on her shirt,” Griffin said. “I thought this would be a funny way to represent parents, who have all had those sleepless nights and spit-up.”

Griffin added, “I just thought, it’s Halloween, let’s dress up funny.”

Lainie is the quietest of her five children, Griffin said. Her nurturing ways have earned Lainie the nickname “Little Mamma” in their family.

“She ... loves to help and loves babies and animals and is very motherly,” said Griffin.

A family friend, Rachael Beachy, posted a photo of Lainie's costume on Facebook over the weekend. The post has received more than 23,000 comments and more than 14,000 shares.

Griffin said it was parents who got the biggest laugh when they saw Lainie’s costume while she was trick-or-treating Monday night.