If you have Ios 14 or newer Ios version on your Iphone or Ipad, you can easily change your icons and widgets by using Icon themer and widgetsmith.
You can follow this tutorial: How to install theme on IOS
Click on the pictures for download
Hello Kitty Big Bow Theme
-2 wallpapers
-19 icons
Hello Kitty Big Bow Theme
-2 wallpapers
-20 icons
Hello Kitty Halloween Theme
-6 wallpapers
-5 widgets
-31 icons
Hello Kitty Rainbow Theme
-3 wallpapers
-4 widgets
-32 icons
Sanrio Christmas Theme
-5 wallpapers + 1 video wallpaper
-3 widgets
-32 icons
