I am working on a wedding cake that the bride wants cake and cupcakes. The cake is 3 tier and one of the tiers will be a dummy. The cake is going to be done in buttercream. I have never covered a dummy in buttercream only, is this possible? Will it slide off? It has been suggested that I do it in Royal Icing, but I am afraid it will not look like the buttercream layers. Does anyone have experience in covering dummies in buttercream that can reassure me??? The wedding in in two weeks, so I need a solution quickly. Thank you VERY much!!

Which tier is the dummy?
I assure you - it won't fall off Are you using dowels?
Covering it in buttercream will be fine - my grandma used to use royal icing.

http://thesugarlane.com/2009/01/24/using-cake-dummies-to-practice-cake-decorating/

I've done several buttercream dummies when I have done demo's at Michaels. Never had any problems with it at all.

ditto Texas. I've done it many times. Never a problem.