Katharine Posillico McGowan, principal of Katharine Jessica Interior Design, LLC. KJID is a multi-faceted boutique firm specializing in the planning of each project from the start of construction through the finished project. Katharine has been involved in the design world for over 20 years. After graduating from Lehigh University in 1990, Katharine began developing her keen eye for unique style and function. From there she studied at the New York School of Interior Design. She launched Katharine Jessica Interior Design in 2003.
Her work has been featured in many regional and national publications including New York Spaces magazine where she was recognized as one of the “10 New Designers Under 40 to Watch.” She has also been featured in multiple Mansions & Millionaires Designer Showcases and received the “Notable Designer,” distinction in the magazine. Most recently, Katharine was recognized by Newsday as one of the “All-Star Designers – Class of 2015.”
Katharine is very involved in the Long Island community and contributes to a variety of charities. Katharine is on the Board of Directors of Family Service League, where she serves as Vice-Chair of Development. In addition, Katharine is the co-chair of the Whit Whit Walk raising awareness and funds for childhood cancer research benefitting The Memorial Sloan Kettering Foundation. Katharine has donated her time and design talent to benefit The Ronald McDonald House of LI, Southampton Hospital, American Heart Association and Mill Neck School for the Deaf.