2016: SUM was founded by Susan (Suzy) Kim as a personal styling studio, named Sum Styling Studio as a sole proprietorship and opens its first 250 sq ft office on Dexter Ave. in Seattle, Washington.
2018: Sum Styling Studio closes and SUM STYLE CO LLC opens as a fashion showroom selling bestselling pieces from previous styling sessions by offering private shopping appointments. SUM STYLE CO LLC's first showroom was located on East Madison St. in Seattle, Washington.
2019: SUM STYLE CO LLC expands and purchases its first commerical unit on 303 East Pike St. #103 Seattle, Washington while opening its first storefront. SUM aggressively opens apparel and accessories accounts from Seoul, Los Angeles, and New York City.
2024: SUM's storefront closes after Suzy moves to Oahu, Hawaii and SUM STYLE CO LLC changes its nature of business to a commerical rental business getting its first tenant within 4 months of being on the market.
SUM HONOLULU COMPANY LLC in Honolulu, Hawaii opens as an online fashion retailer by providing apparel and accessories for men and women from exclusive brands from Seoul mixed with a blend of renowned brands from Los Angeles. SUM also hosts its first pop up in Waikiki, Honolulu in July of 2024 and Lower East Side, New York in September 2024.
SUM HONOLULU COMPANY LLC is scheduled to launch its official rebranded website and catalog in the Summer of 2025 by providing customers a unique shopping experience by showcasing Seoul fashion, Seattle fashion, Honolulu fashion, and Los Angeles fashion.