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Katie Stevens Channels Her Inner Ariel With Little Mermaid Costume

See the 'Faking It' star's fin-tastic getup!

We're used to seeing Katie Stevens' "Faking It" alter ego Karma swim through the halls of Hester High -- but who knew the actress was leading a double life under the sea?

The lovable MTV star temporarily sported some fantastic fins to support Project Mermaids, an enterprise started by photographers Angelina Venturella and Chiara Salomoni to help raise awareness for ocean conservation. What an amazing way to live out all our childhood fantasies!

"Today I got to be a mermaid thank you to an amazing team! @projectmermaids @angelinaventurellaphoto @soniamichelle @hilarymontez," she captioned the magical Instagram snapshot above. Just watch out for sea witches named Ursula, K.

The starlet looked so much like Ariel, we wonder if the photo shoot's team had a little help with her tail from King Triton...

Learn more about the project here, and be sure to keep watching Katie on "Faking It" every Monday at 9:30/8:30c!