AHi everyone!!

I was requested to make a rectangular cupcake cake, so it's gonna be made out of 200 regular sized cupcakes, the thing is I have no idea of what the board size should be. Any suggestions??

What you could do is lay out 200 cupcake liners on the biggest table you have. After they're all arranged, measure the size of the square or rectangle. You can come up with your dimensions that way. Be sure you leave a little extra room on each side so it looks nice. You could probably use a sturdy foam core for your board(s). 

AOh, great idea, thank you!! :)