Help =) I am wondering what I should use for a combination pillar and stacked tier wedding cake? I am stacking the first three tiers and I need the forth tier to be elevated but with no pillars showing. The third and forth tier will have fresh lavender roses between it but they dont want the pillars visible. Please help!!

You could still use the hidden pillars that push into the cake, and elevate the plate above. I have done this many times, so if you have enough flowers the pillars don't show.

You could use a styrofoam dummy. Be sure to have it on its own board (if not on a plate) to prevent your support system from piercing into it.