I also found this sundress for $12 at a local clothing store. E says it makes my butt look big, but for me that is a good thing. I also received a compliment from "Surfer Dude" (not about my butt) who lived next door to our vacation rental, when I wore it. I am not sure if he liked me in it or just wanted to borrow it.
Big Butt Dress
The kids also Tie Dyed T's but with more traditional designs. It is relatively easy nowadays and the kit are inexpensive too.