Fashionable person Blake Lively is hopefully kickstarting a worldwide trend with her latest Instagram, in which she proudly displays some nerdtastic nail art. Lively's Harry Potter nail art shows that the actress (and wife of Ryan Reynolds) has at the very least read seven books in her life—or watched eight movies—as her nail is a shoutout to the final installment of Harry Potter.

I solemnly swear that I am up to no good. 👞👞 👞👞 📜 👞👞👞👞

A photo posted by Blake Lively (@blakelively) on


I solemnly swear that I am up to no good.​

Lively's ring finger displays the Deathly Hallows, and her caption is a nod to the Marauder's Map. If none of these words mean anything to you, get yourself to a bookstore STAT. Serena van der Woodsen has openly declared herself a Harry Potter fan. That means Harry Potter is officially cool. It's only a matter of time until Chanel starts making Harry Potter keychains. (Hopefully that'll happen. One day. Maybe? Never.)

While her simple nail art would look great on anyone's nails, Lively has a special talent for making the strange look fabulous. Like this:

Sources: h/t The Cut