My daughter is 5 years old and wears size 7 shirts so I figured she would be medium here. But knowing that dancewear can run small and my daughter has both a long waist and a larger torso, I bought her a medium size (8-10) so she would have room to grow and that wouldn't be the case. Ironically, even the medium wasn't wide enough or long enough. My daughter looked like she was being squeezed into a toddler shirt and complained that she was uncomfortable. Her skin is swollen under her armpits, although she is of athletic build and could not dance comfortably in them. We ended up gifting this top to a smaller friend who normally wears a size 5-6. Go at least one size up and consider not actually buying it unless your daughter is wand thin and doesn't mind a cropped top that's very tight.
Shamrock Girls' Summer Sleeve Shirts - Girls' Clothing and Tops, Tees & Blouses
44 Review
Kid Nation Short Sleeve Crew Neck Heather Girls' Clothing for Tops, Tees & Blouses
52 Review
Spotted Zebra Girls' Short-Sleeve Flutter T-Shirts: Amazon Brand for Fashionable Kids
43 Review
Amazon Brand Sleeveless Chambray Multi Dots Girls' Clothing
62 Review