My son is 4.5 yrs old and normally wears a size 5T. I bought the 5T and it fit perfectly, sleeve length and pants. The pants were baggy or slim fitted, just right. He is very picky so nothing was itchy or bothersome. The pants has an elastic too. I like how it’s formal wear but still kid like with cute little sharks on the collar shirt. Love it!Very pleased with this set. For perfect for my 7yr old son.Just make sure your child wears something non-patterned or shorts under these pants. They are so thin and light you can see the underwear underneath I ended up not using them for the photos I bought them for initially and have not actually had him wear them yet because of this issue.This dress suit is good quality and true to size.Highly recommend!This was great for the price and the fact it may only be worn once or twice ever. My son was adorable in it even though he said he looked like an old man.Ran a tad large but not in a bad way. My son is 4 and the 4 fit perfect (he's usually a 4 to 5)Light weight and comfortable!It definitely needs to be ironed after washing - especially the pants. But it is very cute and held up well after washing.La tela es de buena calidad, el color me gustó mucho bien confeccionado, mi niño se ve muy elegante, la camisa y el chaleco le quedan bien, solo tendré que arreglar el pantalón que es un poco largo, pero fuera de eso es un buen producto en relación con el precio.We bought two suits. Size 5 and 7 for our 4 and 6 year old. The pants needed to be taken in. The vests were a bit big but they are kids and usually pretty active in it so I think if we had them taken in the boys might have damaged them. They were very well made and came with the tie, pants, shirt, jacket and pocket hankie. Great buy and would recommend.Hermoso y súper elegante, especial para eventos formales. Mi hijo tiene 4 años pero lo compré talla 5 y le quedó levemente bien la camisa y el chaleco, el pantalón levemente grande pero puede usarlo bien, el moño es cómodo para niños, tiene buena tela, me encanto.El color es tal cual al mostrado, es bonito pero a penas le quedo a mi pequeño de 2 años 9 meses, normalmente compro talla 4 en casi toda su ropa por qué el es un niño alto para su edad, y este traje le quedo a penas, sobre todo la camisa que queda un poco pequeña.Me gustó porque queda bien a la talla que seleccionas, en cuanto al pantalón a mi bebé le quedó un poco largo pero se pudo solucionar. Las telas son suaves, los colores como los de la foto y fáciles de planchar. Ampliamente recomendable.