The costume that Kinomoto Sakura wears in the third opening of the 90s anime, Platinum. She also wears it in the crossover game Magical Battle Arena. Take care not to confuse this outfit with her Princess costume from the second movie.
It is a white Frilled Dress, layered over a Pink Dress, with White Wings, a frilled pink Star Choker, White Shoes, and a single white thighhigh on her left leg