People have always been worshiping cats, but every year in Japan, February 22nd is celebrated as "Cat Day" because of it's phonic sound of the number 2. Many artists, professionals and amateurs alike post their Nekomimi offerings on the Cat Day and Cosplayer Enako, a member of cosplay idol group Panashe! is one of them. She posted the series of cat cosplay on her Twitter.
Visit her twitter for more photos of "Enacat".