The Anything Goes crew welcomed two-time Tony winner Bernadette Peters aboard the S.S. American on April 11 to celebrate a very important milestone: cast member Joel Grey’s 80th birthday! Peters, who played Grey's little sister in the 1968 Broadway musical George M!, surprised Grey onstage and led the audience in a rousing rendition of "Happy Birthday." After the curtain call, Peters joined Grey's castmates Stephanie J. Block, Colin Donnell, Julie Halston and more for a birthday party (complete with cake!) onstage at the Stephen Sondheim Theatre. Click below to celebrate Grey’s very first day as an octogenarian, then see him dance up a storm as Moonface Martin in Anything Goes.