Jennifer Lopez JLOPEZ08010_25.jpgJennifer Lopez has pulled out of her San Diego concert Saturday (which was already rescheduled once due to the fires) amidst rumors she's too preggers to perform, according to The Sun. J. Lo has yet to confirm her pregnancy, although designer Roberto Cavalli has hinted at it, and Live Nation (her concert promoter) is claiming the recent cancellation is due to more to the lingering fire damage than her impending due date!