Complex sentence: Traditionally, a flower girl's clothing is provided by the families of the bride and groom; however, most couples today expect the parents of the flower girl to pay for her clothing and other expenses related to her participation.
Split into simpler sentences: Traditionally, a flower girl's clothing is provided by the families of the bride and groom. However, most couples today expect the parents of the flower girl to pay for her clothing and other expenses related to her participation.