I’ve known about this lady for years, after seeing her photos in a Google Image search.
HotaruTenshi is into cosplay, plus-size cosplay. If you have never heard of cosplay before, see this WikiPedia article.
She has a DeviantArt page with many photos from different events.
More photos of HotaruTenshi can be found by doing a Google Image search.
Notice: Image copyright of HotaruTenshi.