From KnitRowan.com website:

This cute girls raglan cardigan is from Little Rowan Blossom. Designed by Linda Whaley in Wool Cotton 4ply its fairisle patterned band would make it suitable for the knitter with some experience.

You will also need 6(6,7,7,7) 12 mm buttons

Finished measurements:
Back width: 12(12.5, 13 ,13.5, 14) 31(32, 33, 34, 35.5) cm
Total length: 13(14, 14.5, 15.5, 16)“ 33(35, 37, 39, 41) cm
Sleeve length to underam: 9.5(10, 11, 12, 12.5)” 24(26, 28, 30, 32) cm

Colors used:
Rowan Wool Cotton 4 ply:
A 484 Petal - 3(3,3,4,4) balls
B 486 Paper - 1 ball for each size
C 485 Flower - 1 ball for each size
D 513 Zest - 1 ball for each size
E 505 Cloudy - 1 ball for each size
F 480 Antique - 1 ball for each size