The garment measurements would be to fit the key body measurements shown below, although the fit would also depend upon the designer's intended look i.e. draped/fitted etc.
size
bust
waist
hip
XS
33"
25"
33.5"
S
34"
26.5"
36"
M
28.5"
38"
L
30.5"
40"
Myolee Sizing
8
10
12
14
UK sizing
4
6
USA sizing
36
38
40
42
European sizing