"She puts forth a sort of aspirational line, which I think 'Oh I want to be like that! I want to be chic and pulled together and a New York lady.' And then I can!" Kemper said of Spade back in February 2016.
Spade stepped away from the limelight after selling her company in 2007, but she recently mounted a comeback.
"I, personally, I don't know about Andy – took off a good nine years raising my daughter and absolutely adored every moment of it," Spade said last April.
Police say she may have taken her own life because of money and marital problems.
New York Fashion Week creator Fern Mallis, who knew Spade for nearly three decades, was shocked by her death.
"She and Andy, they were a team. I mean they were adorable together," Mallis said. "And I just went 'What?'... The last person on earth you'd think would take her own life."
Many of Spade's friends and famous clientele are sending tributes on social media.
Her brother-in-law, David Spade, tweeted a picture of her at his book signing and said: "I love this pic of her. So pretty....Its a rough world out there people. Try to hang on."