Identical: Iggy Azalea aka Cruella de Vil attends the VEVO Halloween showcase in London.
Picture: Iggy Azalea/Instagram
Little old me: Known for her extreme Halloween costumes, model Heidi Klum shares behind the scenes snaps during this years preparation.
Picture: Heidi Klum/Instagram
Popstar Miley Cyrus channels an infamous look by rapstar Lil Kim.
Picture: Miley Cyrus/Instagram
Miss Vamp: Elle Fanning posts, 'My victim's blood taste oh so good!!'
Picture: Elle Fanning/Instagram
Dressed to kill: Besties Delta Goodrem and Renee Bargh snap a Halloween selfie.
Picture: Delta Goodrem/Instagram
Jackie O will have alot more mum-time on her hands now that she has quit her hit radio show with Kyle Sandilands. The veteran radio host is pictured with her daughter Kitty as they went trick or treating. Picture: Kyle and Jackie O/Instagram
Comedian Ellen takes on Nicki Minaj, "This Halloween I'm putting the "boo" in boobs."
Picture: Ellen Degeneres/Instagram
All smiles despite the recent split, model mum Miranda Kerr poses with her little superman Flynn. Picture: Miranda Kerr/Instagram
Why so serious? Kris Smith plays the Joker this Halloween.
Picture: Kris Smith/Instagram
Out of this world: Singer Lily Allen goes green for Halloween.
Picture: Lily Allen/Instagram
Aussie actor Hugh Sheridan takes to the streets of New York for his first trick or treat, "While growing up in Adelaide Australia is the best... I kinda feel like just found out we were seriously ripped off at Halloween." Picture: Hugh Sheridan/Instagram
Gingerbread-man: UK singer Ed Sheeran decides simple is best this Halloween.
Picture: Ed Sheeran/Instagram
Former "Baywatch" star Carmen Electra doesn't seem to have bothered dressing up this year donning her old baywatch swimsuit as she poses with Matt Lauer, dressed as Pam Anderson's character C.J. Parker, on NBC's "Today" Halloween show in New York. Picture: AP
Yet another Miley costume: US TV host Kelly Ripa and Michael Strahan attend Best Halloween Show Ever at Live with Kelly And Michael Studio in New York City. Picture: Getty
Model and actress Rosie Huntington- Whitely looks set to party: Rihanna inspired "Happy Halloween bad gal roro" Picture: Rosie Huntington-Whiteley/Instagram
This Victoria's Secret model is used to being Queen of hearts! "Where is Alice?"
Picture: Alessandra Ambrosio/Instagram
Jessica Alba and husband Cash Warren rock some eighties hair as they go all out in a Witches of Eastwick: Picture: Jessica Alba/Instagram
I got you babe: Stylist to the stars Rachel Zoe poses up as Cher with hubby Rodger as Sonny and later on with famous friend, actress Kate Hudson. Picture: Rachel Zoe/Instagram
Jersey Shore stars rock JWoww and Snooki' Polizzi at the Snooki and JWoww Halloween Event: "Night Of The Living Drag" in New York City. Picture: Getty
Doesn't Nicole Ritchie look the part as she dresses up with a friend? "Happy Halloween from your favorite twins, Arnold Schwarzenegger and Danny Devito" Picture: Nicole Richie/Instagram
Twerk or Treat: Paris Hilton posts,"Like my Miley costume?"
Picture: Paris Hilton/Instagram
Double Trouble: Don't mess with Joel or Benjy Madden this Halloween...
Picture: Joel Madden/Instagram
Two parties and two outfits! Fergie flaunts her motherly figure as Elvira with hubby Josh Duhamel as Riff Raff. Next, they look amazing in their day of the dead attire. Ten out of ten for an amazing effort! Picture: Fergie/Instagram
Busty British model Kelly Brook in a racy Marie Antoinette costume arrives at a star studded Halloween party in LA. Picture: Getty
Devilish actor John Stamos arrives at the Casamigos Halloween Party in LA.. Picture: Getty
Das good? Glee star Lea Michele tries a German theme.
Picture: Lea Michele/Instagram
Arachnophile actress Michelle Trachtenberg attends the Casamigos Halloween Party in LA.
Picture: Getty
Phantom of the Opera: Ryan Seacrest also attends the Casamigos Halloween Party
at the in Beverly Hills. Picture: Getty
at the in Beverly Hills. Picture: Getty
Tasty delight: British It girl and author Alexa Chung goes for a food theme
"I'm a hamburglar" Picture: Alexa Chung/Instagram
"I'm a hamburglar" Picture: Alexa Chung/Instagram
Super skinny Super Woman: Actress and former george Clooney squeeze Elisabetta Canalis
at the Casamigos Halloween Party in LA. Picture: Getty
at the Casamigos Halloween Party in LA. Picture: Getty