XS is about 45" bust and waist. One-Size is about 55" bust and waist. XXL is about 65" bust and waist.
The chemise should fit very roomy. You can order it in satin or cotton.
The hoop skirt is about 38" long and has a drawstring waistband which expands up to 50". Skirt is appropriate for SCA Renaissance, southern belle, Civil War re-enactment, Revolutionary War, Pirates of Caribbean, Victorian & Medieval