Here are some of the best Halloween costumes from your favorite celebrities.

Au revoir girl 👋🏼

A video posted by KATY PERRY (@katyperry) on Oct 31, 2015 at 9:13pm PDT

Can you figure out Katy Perry’s amazing Halloween costume?

Never buy a costume that says "One size fits most". #PissedOffPopeye #CostumeNeedsToComeInSilverbackSize #CornCobPipe #LooksMoreLikeACrackPipe #HappyHalloween 💪🏾👻

A photo posted by therock (@therock) on Oct 31, 2015 at 8:37pm PDT

The Rock as Popeye!!