39 years old (Born on March 11, 1986)
Happy birthday, Amanda Weir! Always swimming faster than the candles can burn out—we suspect you're secretly part dolphin. From making waves in London 2012 by bringing home bronze for Team USA in that incredible 4x100-meter freestyle relay, to every splash since then—you’ve got Olympic-level grace and a gold-medal-worthy sense of humor.May your day be as timeless and memorable as your legendary swims (and hopefully easier than training). Keep riding those waves of success like they're nothing but kiddie pools; just remember that birthdays are meant for cake-eating victories—no stopwatch required! Here's diving headfirst into another amazing year!