Hello Kitty Room Ideas are so perfect for your little princess to make them feel comfortable and happy in their own rooms. Hello kitty is so cute and all dominated by pink color. This girly theme will surely make your daughters to have the fun time at home. How to Design Bedroom with Hello Kitty Room Ideas Hello kitty is popular as the theme to décor a room, this Sanrio’s icon is so famous not only in Japan but mostly worldwide. Some of the colors that can be matched with the icon are baby pink, purple, baby blue, white and.