Bought these for my 3 year old daughter who started tap.  I bought them because they have a velcro strap so she can put them on and take them off by herself.  All the other little girls need the teacher to tie their shoes, but not mine.  They fit her perfectly.  I bought a 10 1/2 wide since she had a wide foot and bought a 1/2 size larger than her normal shoe.  Enough room to grow.  So I would say they run true to size.