Celebrities pulled out all the stops with some of the most creative costumes ever.

Many had several costume changes like Jay Z (Jason & Jean-Michel Basquiat), Beyonce (Janet Jackson and Frida Kahlo) and Blue Ivy (Michael Jackson and a "Picasso Baby.")

Fabolous made it a family affair with his Addams Family get up, Justin Bieber did the Shmoney Dance in his Power Rangers costume and Iggy Azalea trolled her fans with White Chicks attire.

Check out some of the best costumes in the slide above.

Who do you think had the best Halloween costume this year?

Source: Instagram