Actress/singer/dancer and now fashion designer Jennifer Lopez opened the first World of JLo Shop in the United States at Marshall Field's on State Street in Chicago in September of 2005. This launch coincided with a charitable fundraiser for Children's Memorial Hospital.
This bit appeared in Fashion Focus Chicago:
FIRST EVER WORLD OF JLO SHOP AND JENNIFER LOPEZ PUBLIC APPEARANCE
Marshall Field's State Street
111 North State Street
5:00 p.m. – 8:00 p.m.
Join Marshall Field’s and the Medical Research Junior Board Foundation for the exclusive Chicago launch of the JLO by Jennifer Lopez and Sweetface collections at a charity fashion show and reception with Jennifer Lopez. Ticket proceeds will benefit pediatric medical research initiatives at Children’s Memorial Hospital. Tickets are $100. To purchase tickets and RSVP, please call (773) 880-4268 by September 21.

JLo made a public appearance at Marshall Field's for the event, welcomed by a throng of enthusiastic fans crowding three floors.
Afterward, a fundraising dinner and fashion show took place on the 9th Floor of the Marshall Field's Flagship Store, 111 N. State Street.
SOURCES: Chicago Fashion Magazine, Factio Magazine, Fashion Focus Chicago, BellaLopez.com