Blake Lively proves she's a huge Harry Potter fan -- See her cute manicure!

Blake Lively is quite the Potterhead.

The 28-year-old actress proved she's not your typical muggle, with a subtle snapshot of her Harry Potter-inspired manicure.

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The Gossip Girl alum took to Instagram on Tuesday and showed off her pink triangle nail art, which displayed the Deathly Hollows symbol – something easily missed without a wizarding eye.

"I solemnly swear that I am up to no good," she captioned the picture.

This isn't the first time the star has shared her love for the J.K. Rowling series.

After the death of Alan Rickman in January, Lively posted a Harry Potter illustration on Instagram along with her condolences.

"RIP Professor Snape. We will miss you," she wrote.

PHOTOS: 7 Times Blake Lively's Instagram Gave Us Serious Hair Goals

The wife of Ryan Reynolds wasn't the only celebrity to mourn the loss of the British actor. See other tributes in the video below.

Celebrities React to Alan Rickman's Death
Celebrities React to Alan Rickman's Death

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