i'm very new to doing cakes, well my boss wants a lego cake for his son, we saw this pic but what i need help with is how do u think the cakes are stacked, what i mean is if i use the fondant, do i have to put wooden sticks or cardboard to stacked the "legos" (cake) to make it look like there clicked together i dont know if they will sink or what, pls any help would be soooo helpful, thank you. The pic is from another cc user that we like i want to do the cake like that but i need ur help that in advance

Yes, you need to place dowels underneath each tier or the weight will cause them to sink, cause bulging and ruin your cake. Use a cake pan and a level to make sure you cut all of your dowels the same length.

Have fun! It's a great looking cake!

Agree with CakeDiosa. You definitely need supports under each tier otherwise your cakes will collapse from the weight. This looks like a fun cake to do! Post pictures when you are done!