This design is featured in Cozy Bamboo, a book from Ella Rae, and uses Ella Rae yarn including Cozy Bamboo
Diagram ... width of bodice at cast on edge should read.. 39.5, 46, 49.5, 51 cm BACK Shape armholes (RS) Cast off 7(7,8,8) sts, k to end. (WS) Cast off 7(7,8,8) sts, p10(0,3,5), p2tog, [p3(3,4,4), p2tog] 10(16,14,14) times, p to end. [62(70,78,82) sts] SLEEVES [52(54,60,64) sts, 39(39,57,75) shaping rows]