This Shirt is a song by American singer-songwriter and multiple Grammy Award winner Mary Chapin Carpenter. It’s taken from her 1999 first compilation album ‘Party Doll And Other Favorites’.
It features a lovely Travis style picking arrangement and a moving story. It’s in the key of C, using the I, III, IV, V and VI, with a few different chord shapes for several chords. The guitar is capoed on the 5th fret, which puts it in the absolute key of F.