If you're tummy heavy, size up one.  Ash is a 16 and can wear the XL but prefers the 1x.

Details

Overall Dress

Brand: White Birch

Color: Dusty Pink, Black Stripes

Sizing

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

Ashley (Size 16 regular and 40H bust) wears size 1X

Fabric Fit & Feel

100% Cotton

T-shirt Soft 

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

Measurements (approximate and taken while laying flat)

Length from shoulder to bottom seam: Medium 33 Inches | 2X 34 Inches

Inseam (measure from crotch to bottom hem)

Medium 1.5 inches | 2XL 1.5 inches

Rise (Measure from crotch to top waist)

Medium 11.5 inches | 2XL 13 inches