The body was recovered from Kate's New York apartment on Tuesday morning, Reuters reported.
The 55-year-old designer has committed suicide because of initially the police thought it was a suicide.
New York Daily News quoted a source unwilling to disclose the name of the police, who discovered the bodies of the first kate in Manhattan's Upper Side.
Kate, born in the Missouri state of Kansas City, was a former editor of Mademoisele magazine's closest editor; After the husband Andy Spade started in 1993, 'Kate Spade New York' company started.
Due to the design handbag, Kate Spade New York fame spread; Later it started the business of selling garments, jewelry, leatherware and perfume cosmetics.
Kate, who quickly reached the hands of the young working women, quickly reached the fashionable empire with a clear-cut style of handbag. Until then, the handbag of the designer was in the possession of a handful of rich people, dominated by European companies.
Andy and Kate couple sold all the shares of their brand 'Kate Spade' in 2006 after the birth of the girl Frances Spade.
Ten years later, the brand 'Frances Valentin' was launched in the name of shoes and fashion goods brand.
Kate Spade New York has released 'deep condolences' in a statement after the death of Kate. Fashion Designers of America also mourns
New York's chief medical examiner's office said that Kate's death is being investigated.
Many women in social media remember their favorite handbag with their favorite handbag picture of this fashion icon Icon Among them are Chelsea Clinton, daughter of advisor to American President Donald Trump and Advani Ebarga Trump and daughter of former US President Bill Clinton.