We're diving deep into a magical DIY project that's as simple as it is enchanting—making a mermaid tail for dress-up ... knife or razor blade and cut the shape out of the cardboard.

The Glass Onion: A Knives Out Mystery star wore a silver, sparkly mermaid gown ... de la Renta dress fanned out into a trumpet silhouette with a sheer bottom. The daring cut of the halter-neck ...