I love to use Whipped Bettercreme on my cake instead of using Buttercream.

I'm planing to bake a cake with fondant on it. Have anyone tried using whipped bettercreme under the fondant and if it holds?

I know that whipped bettercreme doesn't have to be refrigerator but I'd never tried it with fondant. I know that you would use buttercream for fondant instead.

Also if I don't cover the whole cake with fondant, If I decorate the cake around with fondant will the fondant stick to the whipped bettercreme or will it fall off? Like Alphabet and Letters, Flowers, etc? Thanks.

it will become sticky and fall off, I tried to put a bettercream tier on top of a fondant teir and the short amount of time the bettercream teir was on my fondant teir the fondant got stick and I had to "dry" it with powder sugar... you cant use bettercream and fondant together or even bettercream and buttercream together, I did that and made drop flowers on the side of my cake and you could see where the buttercream had started to slide down the side of my cake.