This dress is plus size design, comparing the size chart of Amazon with US you can find that. If you don't want it loose or big, select one or two sizes down.
Available Size: XS, S, M, L, XL
Sleeve Length (cm): XS:28 cm, S:29 cm, M:30 cm, L:30 cm, XL:31 cm
Bust (cm): XS:98 cm, S:103 cm, M:108 cm, L:114 cm, XL:122 cm
Length (cm): XS:97 cm, S:98 cm, M:100 cm, L:101 cm, XL:102 cm
Shoulder (cm): XS:42 cm, S:43 cm, M:45 cm, L:46 cm, XL:48 cm