Pastel Rainbow Babybreath CakePastel rainbow cake topped with babybreath flowers. Important: Do note that our celebration cakes use buttercream on the external cream instead of fresh cream (used in our classics). The internal cream is still fresh cream. This is to allow the cake to be displayed for a longer time (2 to 3 hours in air con room). Buttercream frosting is thickened with butter and it is hard when cold and straight out from the fridge, and soft only at room temperature.