Born and raised in New York City, Kerby began his career in 2001 while still attending The High School of Fashion Industries in Manhattan. In 2001, at 14 years old, Kerby was assigned an apprenticeship under Kay Unger at her eponymous label and later worked with Georgina Chapman and Keren Craig at Marchesa focusing mainly on creating womenswear early in his career. Pyer Moss began as a project to reinvent classic athletic gear and uniforms by adding opulent cues and refining the fit. Pyer Moss uses high-end materials, masculine form, unique pattern making, and modern tailoring to create luxury sportswear. The Pyer Moss collection is produced in New York City. Since it's debut, Pyer Moss has amassed huge support internationally from press such as GQ, Nylon, Style.com, WWD, V Magazine, Vogue and many more. The debut collection was picked up by Browns of London and has since grown to include many international retailers and boutiques including SSENSE and Harvey Nichols. In 2014, Kerby won the coveted FGI Rising Star Award in the menswear category for Pyer Moss and was also a finalist in the debut DHL Exported Prize presented by IMG Worldwide. Named after Kerby's late mother, Vania Moss Pierre; Pyer Moss continues to innovate and re-imagine menswear every season.