Her business partner Elyce Arons told Business Insider that Kate left them with approximately four seasons worth of ideas and "abundant library of her concepts."
"We don't know what the future holds for us, but we are determined to continue to make her beautiful work live on through Frances Valentine. We will be stronger for her, more connected to each other through her," she said via email.
Kate left her namesake label in 2006, when she sold her remaining shares to Neiman Marcus. At the time, she wanted to focus on raising her daughter Frances Beatrix, who is now 13. She eventually returned to fashion when she founded Frances Valentine in 2015 with her husband Andy, along with business partners Elyce and Paola Venturi.
"We are deeply saddened by the loss of our dear friend and founder, Kate Valentine Spade, who will remain in our hearts forever," the brand posted on social media when Kate passed.
In the days since her passing, people all over the internet shared messages about the first Kate Spade bag they ever owned. Every handbag on the brand's website has sold out, and the company has received personal messages from fans and supporters.
"We have been inundated with calls and emails about [products], but also about people's emotional connection to Kate," Elyce said. "She was authentic and I think people sensed that and really felt close to her."
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This article originally appeared on Cosmopolitan.com. Minor edits have been made by the Cosmo.ph editors.