Nailing an incredible costume is a big dealone that requires time, effort, and copiousSnapchats.

This year was no exception.

Actors, singers, andOlympiansall came together to produce some seriously stunning costumes this Halloweekend.

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Instagram/Martha Stewart; Bette Midler; Jenna Dewan Tatum

Here, 31 of our favorite celebrity choices.

Ariel Winter, bunny

For her first costume, actressAriel Wintersported a classic sexy bunny costume.

Quick question: Where are Toto, the lion, and the tin man?

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Martha Stewart, “Scary Nurse Martha”

Martha Stewart went all in this Halloween.

For her first costume, she dressed as “Nurse Martha and covered herself with blood.

Martha Stewart, also Marilyn Monroe

Stewart then decided to dress as the always iconic Marilyn Monroe.

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Two very differentbut equally awesomeHalloween costumes.

Nina Dobrev, Ryan Lochte

Like many others, actressNina Dobrevdecided to dress asRyan Lochtethis Halloween.

To be clear: Dobrev isn’t dressed as the bear that severely injures Leo.

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She’s dressed as the dead horse that he crawls inside to stay warm.

The model channeled her inner Audrey Hepburn to dress as Holly Golightly in the classic filmBreakfast at Tiffany’s.

No word on whether their costumes were inspired by the new hit HBO showWestworld.

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Elizabeth Banks,Pulp Fiction’s Mia Wallace

ActressElizabeth Banksstunned in aPulp Fiction-inspired costume.

And she flawlessly pulled off her magical look.

One of them: The ever-so-popular nod toSuicide Squad’s Harley Quinn.

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Halsey, also an angel

And the singer kept things simple with a beautiful angel costume.

Its probably the hippest family costume of all time.

Behati Prinsloo, cheetah

The model looked adorable in her simple cheetah costume.

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Alessandra Ambrosio, Jessica Rabbit

ModelAlessandra Ambrosiopulled off an incredible Jessica Rabbit costume.

Mariah Carey, Devil

Mariah Careydressed as a beautiful devilcorset, red leather, and all.

(And she even posted acostume tutorialon her website!)

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Candace Cameron Bure, Tinkerbell

Fuller Houseactress Candace Cameron Bure dressed as Tinkerbell.

Could she be any more adorable?

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