The Lady in Question

Identical twins, sensible Delia and mischievous Cassandra Effington were the most delicious debutantes to ever waltz across a London ballroom. They looked alike in every way...but no one ever expected Delia to be the one to get into trouble...
How did this young lady's reputation become so questionable?
Once she was lovely, respectable Miss Delia Effington, but an impulsive decision -- and subsequent disaster -- forces Delia to retire from society. Until one night, desperate for diversion, she attends a ball as her twin sister and finds herself dancing in the strong arms of the dashing Viscount St. Stephens.