These tights seem to be of good quality but I think it would be better to separate the sizes. They are a few inches longer for my 6 month old who fits perfectly into a traditional sized outfit (ie wears 3-6m clothes at this age).
C9 Champion Girls Supersoft Bright Girls' Clothing and Active
46 Review
Hollhoff Gymnastics Playgrounds Shorts - Breathable Clothing for Girls
48 Review
Tommy Hilfiger Girls Crop White Girls' Clothing
54 Review
Amazon Essentials Little Short Sleeve Leotard Girls' Clothing for Active
61 Review