Books·Posted on Mar 5, 2015J.K. Rowling Is Retweeting Children And Pets Dressed Up As Harry Potter Characters And It Is AdorableHappy #WorldBookDay!by Isaac FitzgeraldBuzzFeed StaffFacebookPinterestTwitterMailLink Today is World Book Day, and The Queen is celebrating! J.K. Rowling @jk_rowling Happy #WorldBookDay everyone! I'm celebrating by writing a book. 09:55 AM - 05 Mar 2015 Reply Retweet Favorite And by "Queen" we mean J.K. Rowling, who took a break from writing the aforementioned book when she noticed that people were tweeting pics of their kids dressed as famous book characters and immediately set out RTing the best pictures of kids' Harry Potter costumes. Such as this adorable Harry Potter: Debbie Rimmer @Debbie_Rimmer1 It's @WorldBookDayUK Huge excitement in school playgrounds across the country! #myharrypotter @jk_rowling 09:34 AM - 05 Mar 2015 Reply Retweet Favorite And this ~flawless~ Hermione Granger: Alison @allie_boda one very excited Hermione for #WorldBookDay2015 @jk_rowling 09:21 AM - 05 Mar 2015 Reply Retweet Favorite Rowling even shared a little Hagrid: J.K. Rowling @jk_rowling How cute is Hagrid? #WorldBookDay 10:00 AM - 05 Mar 2015 Reply Retweet Favorite And Sybill Trelawney and Minerva McGonagall, pal-ing around: Giulia @Otty82 McGonagall&Trelawney can be friends!! #WorldBookDay #HarryPotter @jk_rowling 10:20 AM - 05 Mar 2015 Reply Retweet Favorite It was clear that J.K. Rowling was having a blast: J.K. Rowling @jk_rowling I love these pictures! I couldn't be more proud of our new generation of Harrys, Rons, Hermiones and Hagrids. #WorldBookDay 10:03 AM - 05 Mar 2015 Reply Retweet Favorite But then, just when you thought things couldn't get cuter, Rowling stepped up her RT game and started including pets: J.K. Rowling @jk_rowling And finally, because, you know, it's the internet... #WorldBookDayForDogs 10:25 AM - 05 Mar 2015 Reply Retweet Favorite Even the Dog-Who-Must-Not-Be-Named got some love from the famous author: Caitlin Halliburton @MewMittens Not all dogs are good...some are dark lords. #WorldBookDayForDogs @jk_rowling 06:20 PM - 05 Mar 2015 Reply Retweet Favorite Not to mention the Cat Who Lived: Blue Jellyfish ϟ @smile_world_irc @jk_rowling This cat loves Harry Potter too. The boy who lived is very famous... #WorldBookDayForCats 05:47 PM - 05 Mar 2015 Reply Retweet Favorite Well played, J.K., well played: J.K. Rowling @jk_rowling I'd just decided I'd retweeted enough dogs when... 09:22 PM - 05 Mar 2015 Reply Retweet Favorite Happy #WorldBookDay, Everyone! Tap to play GIF Tap to play GIF Via fuckyeah-jkrowling.tumblr.com Want to keep up with all the latest Harry Potter buzz? Sign up for the BuzzFeed Books newsletter!