Beauty contests are being done wrong, they don't actually do justice to beauty and don't determine the prettiest contestant.

They should be done without decorative makeup, only skincare products, without hair styling other than the one that shows the best of the natural state of the hair. No curling, no straightening, no spray, no complex hairstyles. Brushing allowed.

For clothing, there should be some plain uniform for all contestants. Maybe give them a choice between black and white, or black white and gray, or a small variety of plain colored options, so that they could pick one for their color palette. I think that would do justice to the beauty.

Maybe have a separate category for with and without plastic surgeries.

Other than that, yup. That's it. That would be a contest that could actually find the most beautiful person. For now it's more of a styling contest.