Kylie Jenner showed off her wild side at sister Khloe Kardashian‘s 40th birthday bash on Saturday.

The beauty mogul, 26, took to Instagram to share hilarious footage of herself riding a mechanical bull with her BFF Stassie Karanikolaou at the big Dolly Parton-themed bash.

In the extensive video, showcasing the antics of Khloe, Kim Kardashian, and matriarch Kris Jenner, Kylie and Stassi rocked their ‘diamonds and denim’ themed outfits before hopping on the bull.

Once saddled up, with Kylie in front of Stassi, the pair bursts into laughter as they’re whipped around on the machine.

It wasn’t clear if Timothee Chalamet joined in the lively festivities, given that he and Kylie were seen enjoying a romantic date the previous night.

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Kylie Jenner showed off her wild side at sister Khloe Kardashian ‘s 40th birthday bash on Saturday

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The beauty mogul, 26, took to Instagram to share hilarious footage of herself riding a mechanical bull with her BFF Stassie Karanikolaou at the big Dolly Parton-themed bash 

The reality star and the 28-year-old Dune actor — who were last pictured together in January at the Golden Globes — kept low profiles as they arrived at the TCL Chinese Theatre for a movie night.

The mother of two showcased her toned midriff in a white crop top paired with black baggy pants, complemented by a baseball cap and a facial mask.

She completed her look with simple flip-flops, adding a black jacket and a large black tote as she walked ahead of her matinee idol boyfriend.

Timothée echoed her stylish dark ensemble with his own touch, sporting a sleek black hoodie, comfortable shorts, a casual baseball cap, and a facial mask.

The couple’s outing follows their double date in New York City in May, although they were not photographed together at the time.

Kylie and Timothee joined another couple at the hotspot called Tatiana by Kwame Onwuachi, per People.

During the relaxing outing, an insider expressed to the outlet that Timothee was ‘really chill and so nice’ at the casual dinner.

A separate source added that both Jenner and Chalamet prefer to keep their relationship ‘low-key’ and mainly out of the public eye.

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In the extensive video, showcasing the antics of Khloe, Kim Kardashian , and matriarch Kris Jenner , Kylie and Stassi rocked their ‘diamonds and denim’ themed outfits before hopping on the bull

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Once saddled up, with Kylie in front of Stassi, the pair bursts into laughter as they’re whipped around on the machine

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The women had a blast at the party as the tackled the mechanical bull with ease

The two most likely spent time together in the Big Apple due to Timothee currently filming his upcoming movie, A Complete Unknown, in NYC as he takes on the role of Bob Dylan.

The pair were last pictured together earlier this year in January when they attended the Golden Globes together.

During the awards ceremony, Jenner and Chalamet cozied up as they sat next to each other.

At one point, also shared a sweet kiss inside The Beverly Hilton where the festivities took place.

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Kim showed off her wild side as well

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Khloe and Kim took over the bash with their fun personalities

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Kris Jenner made an appearance in all her hilarious glory

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Jonathan Cheban, aka FoodGod, was seen with Laurie Lynn Stark