EXCLUSIVE PICTURES: Enjoying some Miami heat! Michelle Obama, 53, looks sensational in a white bikini and cut-off shorts as she and daughter Malia, 19, enjoy a winter weekend at the beach The mother and daughter were spotted walking off the beach on Saturday before grabbing dinner at a trendy Miami steakhouse The ladies made a rare appearance in swimsuits, with Michelle showing off her toned torso in a bikini top and Malia in a sweatshirt and black bikini bottoms Sasha and Barack did not appear to be on the trip with the mother-daughter pair Michelle Obama and her eldest daughter...