Not that age would stop her anyway, and it doesnāt really matter, but for those, wondering Meryl Streep is 71 years old and beyond fabulous apparently. While Ariana DeBose, who played the Bullet in Hamilton and will be Anita in West Side Story, was on set, she sat in awe of Streepās amazing stamina throughout the filming of The Prom sequence. Similarly, Kerry Washington was mentally dropping her jaw. Hereās what she said: