At age 4, Gabby developed alopecia areata, an autoimmune skin disease that causes hair loss. Since real hair wigs are expensive, she's generally worn headbands or hats and gone without a wig.
"We're very open and we leave it up to her," Gabby's mom, Emilia Ruiz, told BuzzFeed News. "We want her to be comfortable."
When Tyler and Gabby met three years ago, Tyler noticed that Gabby seemed especially shy. "He immediately asked Gabby's mom what he could do for her to make her feel better," Tyler's dad, Jason Boone, told BuzzFeed News.
"Tyler is such a generous kid," his dad said. "We try to raise him with the message that you put other people first."
Children With Hair Loss now has the hair and will take another few weeks to fashion the wig. Gabby's mom says she's been blown away by Tyler's kind act.
"It's a sweet thing that a kid at his age would want to do that for a friend," she said. "To see Gabby smile after going through all of this has been really sweet."