Hmm. Here's a list of videos and images off the top of my head with similar styles. Not exactly Rococo but similar.
Namie Amuro - Fast Car
Namie Amuro - Fast Car (Live) Starts at 1:40 or so.
Namie Amuro - make it happen ft after school This one is a very loose interpretation.
Namie Amuro - Vidal Sassoon CM
Gackt - Mizerable This one is a maybe.
Hitomi Shimatani - Destiny -Taiyou no Hana- This one is a huge stretch. The pendant and the ruffled red dress makes it come up. Probably more Victorian inspired than Rococo though.
Morning Musume - RAINBOW 7 album cover More Victorian but I just wanted to add it. lol.
That's all that I can think of immediately.