I was asked to apply ribbon around the bottom edge of a wedding cake. I am wondering if I could use piping gel or gumpaste with water. Will the color of the ribbon run? Not sure what to do. Any advise would be great! TIA-Grace

I haven't done this technique, but if you go to google and type in real ribbon on cake cake central a bunch of previous threads on this topic come up that should be able to help you.

Real or fondant ribbon? Over buttercream or fondant?

it the cakes covered in fondant, just take your ribbon, wrap it taught around the cake, and attach at the back side with a dab of royal icing.

If its buttercream, then im afraid im no help, never done it before lol!

What works for me is to let my buttercream crust overnight or several hours and then apply my ribbon at bottom so it doesn't make the ribbon greasy I attach it in the back with royal icing and it holds really good.

HTH,
Carol