I bought age 2-3 years for my son who is 22 months and the fit is good (not large), and he is not a big toddler, he is average/slim, there is length in the trousers but in terms of fit the shirt and trousers are not too loose and I felt this was comfortable and appropriate sizing for him, so I would say overall the sizing is on the smaller side. Everything came included and as pictured with the braces and bow. Very pleased with the outfit.