I bought my 35lb 2 year old boy size 3/4 thinking they’d be perfect (as he’s the same size as his 3 year old sister only shorter) and they are true to age size but they are actually snug on him! I would have preferred a size 5/6 for longer wear as he’ll maybe get this summer out of them. Very nice material, and a cute slim look but an actual size chart for the kiddos would have been helpful to compare measurements for the kids that don’t fall into the true to age categories.