An insider tells PEOPLE that Jenner is "very upset" and supporting Guerrero's family "financially" Kylie Jenner is mourning the loss of a close friend. A source tells PEOPLE the mogul is "shocked" by the sudden death of her longtime hairstylist Jesus Guerrero.

KYLIE Jenner’s hairstylist Jesus Guerrero has died “suddenly and unexpectedly” just weeks after the pair’s trip to Paris. The Los Angeles-based hairdresser, 34, who had a

Jesus Guerrero, a celebrity hairstylist who counted Kylie Jenner, Demi MOore and Jennifer Lopez among his clients, has died. He was 34.