Nope! I used icing because I love the look of these and found the pink icing perfect for spring ( plus they add the perfect amount of sweetness). However if you would rather not add icing or you have your own icing you like to use feel free to use it! Another great option I love to do with sugar cookies is roll in some sprinkles into the dough- this is great especially if you aren't planning on icing them. It still adds a pop of colour (and cute-ness) but without the hassle of frosting!