The girls hoped Dewey could explain what was happening to their wings. He brought Tink and Peri over to a giant snowflake. "Just put your wings into the light," he told them. A few seconds later, the chamber filled with images showing the journey of a baby's first laugh a laugh that split in two and landed on a dandelion! One half traveled to the Pixie Dust Tree on the warm side of Pixie Hollow, and Tinker Bell was born. The other half blew into the Winter Woods, and baby Periwinkle arrived. Meaning that Tink and Peri are fraternal twin sisters!