From Oliver + S:
This princess-seamed blouse includes lots of elegant details and options. In addition to the separate pattern pieces for A/B, C, and D cup sizes, it includes a tower sleeve placket, sleeve cuffs, and a semi-fitted back with darts. View A features a band collar with ruffle trim and a continuous (cut-on) placket. View B includes a pleated tuxedo-style front with separate (set-in) front placket and tuxedo collar.