To look them up on Amazon, you want "swing dress" or "rockabilly dress" those terms will get you dresses in this style.

Here's the white one and here's the black one int he pineapple print.

They come in all the colors, though. I've got one in green plaid, one n blue gingham (it has pockets!) and one in white floral. I really want to get a few more.

Be advised, these are also sometimes called "Hepburn Dresses" because it was Audrey Hepburn's signature style. That means they are cut a little more for someone built like she was. Size UP! And if you're busty you'll likely end up making a few returns, especially if you get one with buttons. And there is no seam allowance on these, so don't think you're going to be able to let them out.

I still completely recommend the dress. Just a "buyer beware" moment. Buy bigger than your regular size and be prepared for it to be tight across the chest.