"It won't make a dent in the grand scheme of things, [but] the meaning behind it is priceless," said Phillip Young, who's son was born 3 months premature.
Every kid loves gifts on their birthday, but 7-year-old Addison Williams instead decided she would pass along her presents to a preemie baby in need.
Little Cooper of Chesterfield County, Virginia, was born at the Medical University of South Carolina in Charleston three months premature. He weighed barely two pounds at birth.
"Words like 'critically ill' or 'one day at a time' were used a lot in his early stages," his dad, Phillip Young told InsideEdition.com.
The family started the Facebook group, "Cooper's Chronicles" in support of their baby and quickly gained the attention of the community, including 7-year-old Addison Williams.
Williams was one of many following Cooper's story after her grandfather, who once worked alongside Young as a firefighter, showed her the page.
Her mom, Emily Williams, said Addison has always been the philanthropic type: "She's always coming up with things like that. I asked her one day why she did, and she said, 'I know other people need stuff more than I need stuff.'"
As her birthday approached, she decided instead of receiving gifts, she would encourage guests to her party to instead donate cash toward Cooper's hospital bills, despite the fact that she had never met the boy or his family in person.
Young and his family, who didn't notice a message from the Williams family until the day of her birthday, were shocked.
"For her to have that mentality at such a young age is such a testament to the people she's around," Young said. "It's amazing for her to show that sort of selflessness."
In total, Addison was able to raise $307 to go toward Cooper's medical bill.
"It won't make a dent in the grand scheme of things," Young laughed as he told InsideEdition.com his baby has racked up more than $600,000 in bills from his stay in the NICU. "[But] the meaning behind it is priceless. She wanted to raise awareness and do something to make Cooper feel a little better."
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While Cooper is still in the NICU, Young said he hopes their baby will be home in time for Thanksgiving at their home in Chesterfield County.
Young also said he hopes his family will finally meet Addison's family — who lives just 90 minutes away — once they get settled in at home.
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