You can size down one for less oversized. Ash is in the xl 

Details

Dolman Style V Neck

Brand: White Birch

Color: Teal

Sizing

S (2-6) | M (8-10) | L (12-14) | XL (16-18) | 1X (18-20) | 2X (20-22) | 3X (22-24)

Rachel (Size 6 top/Size 8 Bottom) wears size Small

Ashley (Size 16 regular and 40H bust) wears size XL

Fabric Fit & Feel

95% Poly 5% Span

Butter Leggings Material Soft and Stretchy 

Relaxed fit with room in the tummy (Taco friendly :-)

Measurements (approximate and taken while laying flat)

Length from shoulder to bottom seam: Medium 26 Inches | 2X 28 Inches

Bust width: Medium 36 Inches | 2X 42 Inches