Gap ladies button down plaid shirt red and blue size M

In excellent pre-loved condition. From my personal closet and worn only a handful of times. No rips, holes or stains. 100% Cotton Tag says size is medium; however, please review measurements below to ensure a proper fit. Approximate laid flat measurements: Pit to pit: 20.5" Outer sleeve length from shoulder seam to cuff: 23.5" Inner sleeve length from pit to cuff: 17.75" Center back length from base of collar to bottom hem: 26.75"