First popular recording by Tommy Dorsey & His Clambake 7 with Edythe Wright (1937).
Hit/popular versions by Sophie Tucker (US #19 1937), Frank Sinatra (1957), Ella Fitzgerald (1957), Tony Bennett & Lady Gaga (US #121/UK #188/BEL #21/JPN #33 2011).
Also recorded by Midge Williams & Her Jazz Jesters (1937), Carl Perkins (1960), Alice Cooper (1974).
Also recorded (as “Maureen is a Champ”) by Frank Sinatra (1968).
From the wiki: “‘The Lady is a Tramp’ was a show tune from the 1937 Richard Rodgers and Lorenzo Hart musical Babes in Arms in which it was introduced by former child star Mitzi Green. The song is a spoof of New York high society and its strict etiquette (the first line of the verse is ‘I get too hungry for dinner at eight…’). Early recordings from 1937 include one by Tommy Dorsey and His Orchestra (featuring Edythe Wright on vocals), Midge Williams and Her Jazz Jesters, and Sophie Tucker.