Size 4T was perfect slightly past the knee length for my very tall 2 year old daughter (80-90th percentile height). The width is adjustable thanks to bow closure in back. I wish I bought size 5T so she could wear it next summer too. Linen cotton blend was very comfortable for her to wear for a 7 hour outdoor wedding in the California summer heat. Photos of dress and the tulle were amazing. Seems extremely good quality for price. Didn't rip despite her best efforts to play rough. She is very picky, but was happy to wear this dress, even if it wasn't pink (her favorite color). Would definitely buy again, but size up for longer length.