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Just trying 2 get back to dis, Eilish wrote over the photo.

Billie Eilish appears at the Oscars in a white shirt jacket and long hair worn down.

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(Seriously, watching her dry her waterlines with a Q-Tip and apply eyeliner was hypnotizing.)

Watch the full routine:

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How well do you remember 2024s TikTok trends, brand scandals, and celebrity makeup moments?

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Put your beauty knowledge to the test.

More celebrity beauty news:

Now, watch Tyla prep for the Met Gala: