Ooo this is difficult lol I'll name a few for both of them (all of them are SSR outfits since if I had to go through all of them I think I'd be here all day-)

Snow: Central Rhapsody, The one outfit where they went to a school and look like students, Lago event

White: Stellato (I'm biased I love the evet and the outfits are very me themed lol), Christmas, 3rd Anniversary