Mary-Kate and Ashley Olsen took a dip at Hotel du Cap Eden Roc in Antibes, France, over the weekend, the usually reserved twins
letting loose at the exclusive resort. Ashley soaked up the sun in a classic black strapless swimsuit, while Mary-Kate flaunted her abs in a chic two-piece. The pair was joined by Mary-Kate's husband
, 47-year-old Olivier Sarkozy.