Adelaide's 5th birthday is coming up in September and she decided on a mermaid theme for her party. So, Pinterest lately has been about all things mermaid, pink, purple and aqua lately! I saw a pin with a number similar to this and when inspiration struck last night, this is what I came up with! To make this, here is what you'll need: 1 Large flat piece of cardboard to cut out your number Several sheets of cardstock in your desired colors (I used 4 12x12 sheets and had a few circles left) A…