Complex sentence: The current styles were founded in the revolution during the early 17th century that sharply changed the elaborately embroidered and jeweled formal clothing into the simpler clothing of the Regency period, which gradually evolved to the stark formality of the Victorian era.
Split into simpler sentences: The current styles were founded in a period of sartorial revolution during the early 17th century. This sharply changed the elaborately embroidered and jeweled formal clothing into the simpler clothing of the Regency period, which gradually evolved to the stark formality of the Victorian era.