Loos ("Gentlemen Prefer Blondes") wrote "Happy Birthday" as a starring vehicle for her friend, Helen Hayes, and Richard Rodgers and Oscar Hammerstein produced it on Broadway in 1946, where it ran for nearly a year and a half.

WSJ: Review: 'Happy Birthday' a booze-filled romp

Helen Hayes said that of all the lucky things that had happened to her in the theater, meeting the Lunts was the luckiest.

NPR: The 'Fabulous Lunts,' Alive at Ten Chimneys