S.G.
My oldest granddaughter is built the same way. She is 6 years old and we can't seem to find pants that work well for her either in the girls section. What we do is go to the boys section in JC Penney's or Sears and buy jeans there. She wears a size 10 in girls and an 8 in boys. If she doesn't like the boys pants because they don't have all the sparkles and girly things that the girls do, go to walmart or a sewing center and find iron on patches that are girlish and iron them onto the pockets or front legs