See some really cool Halloween costumes worn by a number of celebrities.

Katy Perry

Katy Perry dressed up as Hillary Clinton and was accompanied by her Bill Clinton.

Kathy Griffin

Kathy Griffin dressed as the Snapchat deer filter to attend Bette Midler‘s annual Halloween bash.

Kylie Jenner and Tyga

Kylie and Tyga dressed as sexy skeletons.

Bette Midler

Bette Midler dressed as the iconic Hocus Pocus character.

Nick Cannon and Mariah Carey

Nick Cannon and Mariah Carey dressed as Luigi from the Mario game and Mariah dressed as the devil.

Scott Disick

Scott Disick let out his inner Superman by dressing as Clark Kent to the American Psycho Halloween party.

Emily Ratajkowski

Gone Girl star, Emily Ratajkowski dressed as Cleopatra.

Paris Hilton

Paris Hilton took her Halloween inspiration from Alice in Wonderland.

Chrissy Teigen

Chrissy Teigen found a hot dog costume for her six-month-old daughter.

Leonardo DiCaprio

Leonardo DiCaprio donned a simple wolf mask.

Kourtney Kardashian

Kourtney Kardashian dressed as a zombie bride.