In the days leading up to the event, Paris was sharing her preparation progress with her Twitter followers.
On June 18, the heiress tweeted that she was "getting ready," and linked to an Instagram post where she was trying on various headbands, which included everything from flowers with lights in them to studded cat ears.
She also posted sneak peeks of some of the ensembles she planned to wear. One was a bright pink Hello Kitty costume, complete with big bows, flashing lights and a colorful tutu.
As for the other one, Paris paid homage to the carnival's theme with a blinged-out daisy dress, which was a huge upgrade from the floral frock she wore last year.
Of course, Paris posted plenty of pictures of herself in the dresses and also utilized Instagram's new video feature to make sure we all saw just how awesome her ensembles were.
What do you think of Paris Hilton's Electric Daisy Carnival costumes? Love 'em...or hate 'em?!
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Gallery | Electric Daisy Carnival Las Vegas Lineup