My daughter is a pretty "big" girl at just 10 years and I have the hardest time finding clothes for her let along halloween costumes.  The extra large or one size fits all that they sell in the stores just don't work for us.  We decided to look online and she was attracted to this one.  When it arrived, it fit perfectly and the colors were great.  I was amazed at the details on the upper portion of the dress as well.  Very well made.  I would definitely recommend buying this costume.