My daughter takes Hip Hop dance classes and needed "hip hop" shoes.  She is currently a size 1 (girls) and I wanted to get them slightly larger (1.5) so she wouldn't grow out of them anytime soon.  We ordered the size 3.5 and they are the perfect size - I'd say just about a 1.5 girls.  She said they were comfortable, too!  We are very happy with these shoes and would recommend them.