Dr Seuss Juniors Plus Size Don't Be A Grinch Christmas T-Shirt Dr Seuss juniors plus size tee Don't Be A Grinch crew neck, short sleeves, solid back 60% cotton, 40% polyester. Officially licensed. Junior plus sizing, runs smaller than regular plus size. Measurements laid flat. 2X (19/21): 24" across chest, 25" long. 3X (23/25): 25" across chest, 26.5" long.