Fit and sizing: 

Measurements are approximate. Length measurements are taken from the top of the shoulder to the bottom hem laying flat.

Top:

Small - Bust: 40", Length: 26 1/2", Sleeve: 29 1/2"
Medium - Bust: 42", Length: 27", Sleeve: 29 1/2"
Large - Bust: 45", Length: 27 1/2", Sleeve: 29 1/2"
X-Large - Bust: 46", Length: 29 1/2", Sleeve: 31"
1X-Large - Bust: 48", Length: 28", Sleeve: 31"
2X-Large - Bust: 50", Length: 28 1/2", Sleeve: 31"
3X-Large - Bust: 56", Length: 29", Sleeve: 31"

Bottom:
Small - Waist: 26 1/2", Length: 40", Inseam 28", Rise: 13"
Medium - Waist: 28", Length: 41", Inseam: 28 1/2", Rise: 13"
Large - Waist: 30", Length: 41 1/2", Inseam: 28", Rise: 13 1/2"
X-Large - Waist: 32", Length: 42 1/2", Inseam: 29 1/2", Rise: 14 1/2"
1X-Large - Waist: 34", Length: 43", Inseam: 28", Rise: 14 1/2"
2X-Large - Waist: 36", Length: 43 1/2", Inseam: 28 1/2", Rise: 15"
3X-Large - Waist: 39", Length: 44", Inseam: 28 1/2", Rise: 15"

Fit:
Small: 0-4
Medium: 6-8
Large: 10-12
X-Large: 14-16
1X-Large: 16-18
2X-Large: 18-20
3X-Large: 20-22

See Halle's sizing HERE, she is wearing size Small

See Margie's sizing HERE, she wears size Large