Madonna Monday

" Who's That Girl" is one of the rare songs that Madonna has released as a single but has performed during only one tour. That tour of course being 1987's "Who's That Girl" Tour. The song is from the film of the same name and spent 1 week at #1 in August of 87. It has been considered one of her best songs. It has been notably absent from any greatest hits album she has released. The song has always been one of my favorite Madge tunes and I have always wondered did she write the song about herself?