Smallest slingshot ever seen

I found some slingshots for sale on ebay. This is the large one.

But, is the following a slingshot?

The answer is YES! Look at it carefully. Look at the bottoms and follow the two strings. You will find they both connect to a loop which your neck goes through. Zooming in the loop looks like it is elastic.
This is the smallest slingshot swimsuit I have ever found. Hopefully someone reading this has a photo of one being worn.