Looking good, Rachel McAdams!

The 37-year-old actress attended the Vanity Fair and Barney's New York private dinner to celebrate Spotlight director Tom McCarthy on Wednesday — and fans were quick to make note of her stunning new platinum blonde hair.

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Rachel opted for a blue David Koma dress for the event, and completed her look with a red lip and minimal jewelry.

We're super excited to see The Notebook star take this look to the Oscars on Sunday — where she is up for Best Actress in a Supporting Role.

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"I’m still speechless [about the nomination]. I couldn’t stop laughing! I was so not expecting this,” she previously told Us Weekly.

Good luck, Rachel!