Ten years have shown that living with young Mia—who has Down syndrome—was hardly the burden some predicted. Her family, the Armstrongs, can attest to that. The 10-year-old, now a model living in California, also became an advocate for others with disabilities. After appearing in a Walgreens Red Nose Day campaign in 2017, Mia was flooded with modeling requests for big brand commercials, and she’s been working ever since. She’s even represented Tommy Hilfiger’s new line of adaptive clothing. She’s built up a lot of confidence. At a photo shoot in New York, Mia’s family (as they shared on their website) recalled how she boldly announced to a room full of industry moguls: “I am fashion!” Parents of three Cara and Jack Armstrong had to overcome slews of false assumptions about her condition when their daughter was born a decade ago. They heard the same three words over and over since Mia was …