Today I found an American Girl doll swimsuit on eBay! Other people found it before me, but that's OK, I was playing with a friend. Check it out:

I really like this swimsuit! I like it way more than the current Boho Beauty Swimsuit.
Here's the rest of the photos:
AMERICAN GIRL TRIVIA: The first water-related outfit was called the Middy Outfit from Samantha's Collection and was released in 1988.
COMMENT DISCUSSION QUESTION: Do you go to the pool in the summer?
MY ANSWER: It's too hot to go to the pool where I live!