Personal recommendations

cm in	Hip (in)	Waist (in)	US Size
XS	35-36	25-26.5	0-2
S	37-38	27.5-28.5	4-6
M	39-40	29.5-30.5	8-10
L	41-43	31.5-33.5	12-14
XL	44-46	34.5-36	16
2XL	48-51	39-42	18-20
3XL	52.5-54	43.5-45	22-24
4XL	55-57	46-48	24-26

cm in	Bust (in)	Underbust (in)	US Size
S	33-35	28-29	2-4
M	36-37	30-31	6-8
L	38-39	32-33	10-12
XL	40-41	34-35	14-16
2XL	42-43	36-37	18-20
3XL	44	38	20

Select a height to understand the length fit:

Bust
Measure under your arms. Around the fullest part of your chest
Waist
Measure around your natural waistline at belly button level
Hips
Measure around the fullest part of your body at the top of your leg
Inseam
Wearing pants that fit well, remove your shoes and measure from the crotch seam to the floor