Personalized Mermaid Princess 4th Birthday Men's V-Neck T-Shirt. 4th birthday Men's V-Neck T-Shirt - White with a beautiful little mermaid princess wearing a crown atop her red flowing hair and surrounded by cute fish and starfish. Text says THIS LITTLE PRINCESS IS 4. 4.7 oz., 100% pre-shrunk cotton Narrow, set-in 1x1 mitered V-neck collar Shoulder-to-shoulder taping Double-needle stitched sleeves and bottom hem