Elle Macpherson put her impressive bikini body on display on Twitter [1] earlier this week, but her fit frame is even more impressive when seen outside of social media. The 50-year-old model (yes, she's really 50!) frolicked on a yacht off Sardinia, Italy, on Thursday with her husband, Jeffrey Soffer, and a group of friends. Elle changed into several different bikinis as she posed on the deck of the yacht and later took a dip in the Mediterranean Sea. Keep scrolling for more images of Elle's bikini vacation, and be sure to vote for your favorite celebrity bikini body of the year [2]!