Best Celebrity Halloween Costumes

Nicole Richie as a Girl Scout! (Troop Beverly Hills, of course)

Happy Halloween, loves! Even though most of us won't be putting our costumes to use until nightfall, some of my favorite celebs have been sharing their fab costumes on Instagram all week. From a posh Girl Scout to an adorable zombie, all of my Hollywood faves are seriously raising the costume bar this year. Which celebrity costume are you loving?

Kim Kardashian as a mermaid!

Lucy Hale as a unicorn!

Paris Hilton as a fairy! 

Kris Jenner as Wonder Woman!

Shay Mitchell as Foxy Cleopatra and Ashley Benson as tweedle dee!

Rachel Zoe as a flapper!

Lauren Conrad as a ghost!

I hope you all have a fabulous Halloween, stay safe and eat lots of candy corn! Oh and tweet me a pic of your costumes, @fashboulevard Can't wait to see what you guys are going to be this year! Xo