You will need 6 buttons. Sirdar used their buttons # B5611-0485.

Finished measurements
Chest circumference: 17.75(19, 21.75, 23.75)“ 45(50, 55, 60) cm
Finished length: 9.5(11, 12.5, 15)” 24(28, 32, 38) cm
Sleeve to armhole: 6(6.5, 8, 9.5)“ 15(17, 20, 24) cm

Yarn used:
Sirdar Snuggly Cashmere Merino Silk DK
A. 307 Pixie Dust - 2(2, 3, 4) balls
B. 305 Pied Piper - 1 ball for all sizes

This pattern is available only through the printed or eBook Sirdar 563 Snuggly Favorites

A super cute jumper with buttons at the shoulder for easy dressing and undressing. Perfect for that first trip to the seaside.