Designer Kate Spade found dead in Upper East Side apartment

Famed fashion designer Kate Spade was found dead inside her Upper East Side apartment. She was 55.

Police sources say her death was an apparent suicide — Spade hanged herself with a scarf on a doorknob.

Her body was discovered by a housekeeper at 10:20 a.m. Tuesday.

Sources told The Post that she left a note.

Spade got her fashion start in the ’80s working for the magazine Mademoiselle.

Together with her husband, Andy Spade, she launched Kate Spade handbags in 1993. The line led to more successes, and the Kate Spade brand grew into a global entitiy.

She sold the company in 2007, but launched a new brand called Frances Valentine in 2016.

This story is developing.