I am trying to find out the best way to attach the edible glitter to the sides of a cake covered in buttercream.  I know that piping gel is a good glue but not sure how to cover the sides, add the glitter evenly spread out, and not mess up the buttercream.  Any suggestions would be greatly appreciated.  Thanks in advance for your help!

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Not sure what to suggest:(   I picture holding it in hand & blowing it on B U T!  With the world so messed up it’s not a good idea.   Maybe use an airbrush to blow out of hand?   With sprinkles or chopped nuts etc you would roll it —could you put a cake board on top & bottom to guide the cake while rolling thru glitter?   

I've never put glitter on a cake, but the way I put sprinkles on the sides is to fill my hand with sprinkles and press them into the frosting.  It takes a while, but it gets the job done.

Come to think of it, you could freeze the cake, spread piping gel thinly over the buttercream and, while it is still frozen, turn the cake on its side and roll it in the glitter until it is covered.