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Jennifer Lopez hit a few fashion shows in NYC (including Oscar de la Renta), before heading to Malibu to compete in a triathlon. 
Funnily enough, Jen was supposed to guest judge on the finale of Project Runway, but she pulled out due to a "foot injury." But she finished the triathlon in really good time. So why didn't she want to be a guest judge for the PR finale...a gig that involves no walking really, just sitting in the judges chair?
Jen's tri shot via people.com
