Oh, Lady! Lady!! is a musical with music by Jerome Kern, a book by Guy Bolton and P. G. Wodehouse and lyrics by Wodehouse. It was written for the Princess Theatre on Broadway, where it played in 1918 and ran for 219 performances. The story concerns an engaged young man, Bill, whose ex-fiancée arrives unexpectedly on his wedding day. Bill works to convince his old flame that he was not worthy to marry her, but his clumsy efforts do not make him look good to his new fiancée, whose mother already dislikes Bill. A couple of crooks cause further complications.

Jerome David Kern was an American composer of musical theatre and popular music. One of the most important American theatre composers of the early 20th century, he wrote more than 700 songs, used in over 100 stage works, including such classics as "Ol' Man River", "Can't Help Lovin' Dat Man", "A Fine Romance", "Smoke Gets in Your Eyes", "The Song Is You", "All the Things You Are", "The Way You Look Tonight" and "Long Ago ". He collaborated with many of the leading librettists and lyricists of his era, including George Grossmith Jr., Guy Bolton, P. G. Wodehouse, Otto Harbach, Oscar Hammerstein II, Dorothy Fields, Johnny Mercer, Ira Gershwin and Yip Harburg.