Ashlee Simpson has hired celebrity wedding planner Mindy Weiss for her lavish bohemian-themed nuptials this weekend to “Hunger Games” star Evan Ross, son of Diana Ross.

Page Six first reported Ashlee will marry Evan at Diana’s Greenwich, Conn., house, and Diana is “involved in every part of the wedding [and] engagement party.”

Weiss planned Ashlee’s sister Jessica’s wedding to Eric Johnson, and has also organized the nuptials of Ellen DeGeneres, Fergie and Gwen Stefani.