She began her fashion career with Liz Claiborne, becoming vice president of operations at the age of 28.

[7] Under her leadership, the company has reported a revenue of $200 million as of July 2019[8] with the collection available in 400 stores in North America and China.

[9][10] During the coronavirus outbreak in 2020, she led her company’s partnership with the Brooklyn Navy Yard and the NY Economic Development Council (NYEDC) to design and sew PPE gowns for local hospitals.

[11][12] Quinn is a Trustee of the Fashion Institute of Technology, an Associate Partner with the Partnership for NYC and is a member of C200, a women’s executive leadership organization.

[3] She has actively supported charities that target Alzheimer's disease, due to one of her parents being diagnosed with the condition.