Rosie O’Neill is the co-founder and chief creative officer of Sugarfina, a nationwide gourmet candy boutique.

In 2012, she and her fiance, Josh Resnick, launched Sugarfina, which now has 22 stores and 15 Nordstrom shop-in-shops across North America. Before Sugarfina, Rosie spent seven years as marketing director for Barbie at Mattel.

Rosie is a fourth-generation Irish American who believes she inherited her “go big or go home” entrepreneurial gene from her great-grandfather, a Boston pharmacy-owner who lost his business in a prize-fight bet. “I first learned I was Irish when my mom served me Lucky Charms on St. Patrick’s Day at age six,” she says. “I’ve always considered we Irish to be some of the most determined people around!”

Born in Kansas City, Missouri, Rosie holds an undergraduate degree in communication studies from UCLA and an M.B.A. in marketing and strategy from the UCLA Anderson School of Business Management. She lives in L.A. with her fiance, Josh, and stepchildren, Samantha, Elan, and Natasha.