"Stay as sweet as you are" Harry Revel. composer and Mack Gordon, lyricist , wrote a number of movie songs for Alice Faye, the darling of 20th Century Fox. She had a wonderful marriage with Phil Harris, singer/comedian on the Jack Benny Show . This lovely song asks that the lady in question not change anything at all because " Your divine, you ! "
Sung with great tenderness by Mel Torme who hated the term " The Velvet Fog" but there was pure velvet in his voice and presentation. 

 https://youtu.be/5MsmwoT_o2Y