You can size down 1, 2 or 3 from your normal size.  Ash is pictured in the large as a size 16 and has room to tie 

Details

Short Sleeve Crew Neck

Brand: Zenana 

Color: Black, Ice Blue, Fuchsia

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 Large, Medium or Small  

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 29.5 Inches | 2X 30.5 Inches

Bust width: Medium 56 Inches | 2X 66 Inches