America's reality star family meets the Stone Age. 

It's no secret the Kardashian-Jenners love dressing up for Halloween and this year, they did not disappoint with a handful of detailed looks, including Khloe Kardashian as Disney villain Cruella de Vil and Kylie Jenner as princess Ariel. After revealing her transformation into Legally Blonde's Elle Woods, Kim Kardashian unveiled her family's adorable costume theme for 2019: The Flintstones!

In photos shared on Instagram, the reality star, in costume as Betty Rubble, posed with her four famous kids, North WestSaint WestChicago West and Psalm West, who were clearly dressed up as Wilma Flintstone, Fred Flintstone, Pebbles Flintstone and Bamm-Bamm Rubble. According to Kim, Kanye West made an incognito appearance dressed as Dino, the pet dinosaur, which accidentally scared Chicago. 

"This family pic was such a challenge because Chicago was so scared of Dino! LOL We tried to explain and show her that it was just daddy but she didn't get the concept yet!" Kim explained on Instagram. "So shout out to the photographer for editing her in & making our family Flinstones [sic] dreams come true!"

Guess there's one thing left to say about the family's costumes this year: yabba dabba doo!

For more of the famous family's many costumes this year, keep scrolling!

Kim Kardashian, Kanye West, Kids, Halloween 2019

Instagram

Kim Kardashian, Kanye West, Kids, Halloween 2019

Instagram

Kim Kardashian, Kanye West, Kids, Halloween 2019

Instagram

Rob Kardashian, Kris Jenner, Halloween 2019

Instagram

Kendall Jenner, Halloween, Birthdays

Instagram

Kourtney Kardashian, Halloween 2019, Vampira

Instagram

Kylie Jenner, Kendall Jenner, Halloween, Birthdays

Instagram

Kourtney Kardashian, Halloween

RAAK / BACKGRID

Khloe Kardashian, True Thompson, Instagram, Halloween

Instagram / Khloe Kardashian

Khloe Kardashian, True Thompson, Instagram, Halloween

Instagram / Khloe Kardashian

Kylie Jenner, Stormi Webster, Halloween 2019

Instagram

Kris Jenner, Halloween 2019

Instagram

True Thompson, Halloween 2019

Instagram

Kim Kardashian, Legally Blonde Halloween, Instagram

North West, Penelope Disick, Halloween 2019

Instagram

Khloe Kardashian, True Thompson, Halloween 2019

Instagram

Stormi Webster, Instagram

Instagram / Kylie Jenner

Kylie Jenner, Ariel Halloween Costume

True Thompson, Halloween 2019

Instagram

True Thompson, Halloween 2019

Instagram

Kylie Jenner, Stassie Karanikolaou, Madonna, Britney Spears, Halloween 2019, Instagram

Instagram / Kylie Jenner

True Thompson, Halloween 2019

Instagram

Kylie Jenner, Halloween 2019

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