When Amanda Scott was planning her wedding last year, she couldn’t help feeling like something wasn’t quite right.

Then it hit her: She’d forgotten to include her best friend.

“We were talking about the wedding party, and something about it didn’t feel complete,” Scott, 24, told TODAY. “It was like a light bulb in my head — I should ask Granny to be a bridesmaid!”

Amanda Scott poses with her beloved grandmother Mary Smith on her wedding day. Jeff Jones Photography

“Realistically, she is my best friend,” Scott, who lives in Ontario, Canada, continued. “We’re just very close. We go to all our family things together, I take her to all her doctor’s appointments … we line dance together. I talk to her a lot on the phone. At the end of the day, I thought, why wouldn’t I ask her?”

Scott’s 92-year-old grandmother, Mary Smith, was “thrilled” to be involved, Scott said. And when it came to bridesmaid duties, she was eager to help.

“I was really impressed with her!” Scott said. “She got her outfit all on her own, she donated some stuff from her past wedding to help make my veil, she was just very good at being a part of the wedding.”

Smith told TODAY she’s been a bridesmaid three times before, but not in several decades.

The bridesmaids all wore denim outfits and cowboy boots. Jeff Jones Photography

“I thought it was an honor that she asked me to be a bridesmaid at my age,” she said. “It was a lovely day.”

Read more about this special wedding party member on TODAY.