About17th century. Its earliest performance was in Italy in the late16th century, but in some areas, mainly Germany and South American colonies, it did not reach its peak in some aspects until18th century. Baroque and Rococo belong to the clothing of the last century, but Baroque is earlier than Rococo era, and Baroque is a male-centered court culture, so the clothing looks complicated and atmospheric. You can watch The Mistress of Louis XIV starring Sophie Marceau. Her dress is baroque.
Rococo is an elegant style centered on women, and all decorations avoid straight lines and right angles. Madame Pombadou is the representative of Rococo. Whenever Rococo is mentioned, you should think of her. She pushed Rococo to a very high position. You can watch Cleopatra, which describes the Rococo period.