Campbell & McClain Hardin turned six on November 7, 2013.
Many of their friends joined them to celebrate at a local painting studio, Painting With a Twist.
They all participated in the step by step painting class.
Then, treated to snacks, and cake.
Very similar to all giddy girly birthday parties, only the difference at this party, the gift table.
It's filled with toys for infants, not gifts for six year old girls. But that's exactly what the twins asked for on their birthday.
Campbell & McClain say, "We're helping children for children's hospital. We like it because it's really cool for other kids."
The toys are for the NICU at East Tennessee Tennessee Children's Hospital.
Jasmine Hardin, their mother says, "We had a talk about how they're still getting plenty of gifts from mom and dad and their grandparents. We don't need all of these things when we don't play with everything. And, they've been learning a lot about that and talking about it at school and with Thanksgiving, the timing was great."
And the twins aren't alone. A few other kids chose Volunteer Spirit over presents for themselves.
Five year old Bryce Pereyo collected food for Young Williams Animal Center.
On her 9th birthday, Katie Jenkins received loads of first aid and personal items for homeless people in Ukraine.
And even Emma Claire's first birthday wrapped up with a big check for Childhelp Tennessee.
Cynthia Barreira, a parent says, "I think it's a wonderful lesson we teach our kids. I think it is important to encourage kids to do that so they know it's not all about them. And, it's easy to pick out a baby item."
And in McClain and Campbell's case, mom plans to bring the birthday twins along for the special delivery.
"Maybe they can see through the windows the babies they are helping," says, Jasmine.