Article continues below advertisementJennifer Lopez had a sassy response to those who criticize her fashion choices at 56 years old. During the opening night of her Up All Night Live Las Vegas residency at The Colosseum at Caesars Palace on Tuesday, December 30, Lopez addressed the large audience about the "funny things" she hears about herself in the media.Article continues below advertisementSource: @popcrave/XJennifer Lopez addressed critics while on stage in Las Vegas.