Being blonde helps with everything

Three sisters living in genteel poverty find rich titled husbands. A lot of Regency romances have a similar premise. These sisters, despite having a brain and some excellent education despite being women in 19th century England win their spouses primarily on the basis of their golden/silvery blonde looks and bright blues together with supposedly luscious, but well covered bodies. All stories start out well enough but later turn into sugary and syrupy narratives that turns this reader off.