On Sunday, February 28, Hollywood's best actors and actresses stunned in a variety of glamorous looks on the Academy Awards red carpet. And yet, there seemed to be one magical common theme: several of the gorgeous dresses (and one insanely intricate ring!) were straight out of an underwater fairy tale. Ariel from The Little Mermaid would approve.

Saoirse Ronan

Ronan's glittery green gown reminds us of a mermaid's tail. Maybe if Ariel was wearing this, she wouldn't have wanted to leave the ocean.

Rachel McAdams

Green was a popular color this year! McAdams looks even more flawless than usual in this gown.

Naomi Watts

Watts' sequined dress has actual scales -- in a good way!

Brie Larson

Larson was a glamorous waterfall.

Whoopi Goldberg

Goldberg's dress was a simple black, but the real star of her classic look was the octopus ring twisting its tentacles around her right hand.

Here's a close-up:

Pretty cool, right? This accessory needs to be "Part of Your World."

If you want to relive the Oscars magic, watch all the can't-miss moments below!