Timothée Chalamet flashes butt on ‘SNL’ as Troye Sivan

Look at those dunes!

“Saturday Night Live” host Timothée Chalamet, 27, revealed his buttocks in a sketch Saturday while portraying openly gay Australian pop star Troye Sivan, 28.

Cast member Sarah Sherman plays a woman who complains to a sleep clinic physician (Bowen Yang) about her recurring nightmare of a mysterious figure in her room. The doctor induces her hallucinations so he can see what she’s experiencing.

“OK, this feels weird, but, oh I see him, he’s right here next to me,” the woman shares.

Chalamet appears beside her bed in a white tank top, baggy blue pants, and wavy blond hair.

The “Dune” actor — who is dating Kylie Jenner — introduces himself as Sivan and begins to perform a version of the choreography from his hit “Got Me Started.”

Chalamet spices up the routine by giving viewers a look at his wiggling backside in “tiny little red undies.”

The flustered woman proceeds to interrogate the singer.

“What are you? Are you a demon?!” she asks.

“Not quite, girly,” responds Chalamet as Sivan. “I’m an Australian YouTube twink turned indie pop star and model turned HBO actor Troye Sivan being played by an American actor who can’t do an Australian accent.”

Sivan recently starred on the HBO series “The Idol,” but he is better known for his presence on TikTok, his queer music videos, and his quirky dance moves.

Once the woman identifies the mysterious figure in her vision, her doctor expresses concern.

“I was afraid of this,” he confessed. “We’re seeing this more and more now that this boy is sneaking his way into the mainstream. You’re the fourth woman I’ve seen this week who’s suffering from Troye Sivan dancing as their sleep demon.”

The doctor has no explanation for Sivan’s appearance as a sleep demon, with the woman questioning if it’s a bad thing.

“Isn’t he kind of famous?” she asks.

“He’s gay famous,” the doctor replies. “It’s different!”

The doctor activates his therapy device again to get a better description of Sivan’s dance moves, but it only brings more anguish to the woman.

“Why does he have my psyche in a choke hold?” she begs.

Chalamet-as-Sivan responds, “Isn’t it obvious, homie? I look like a moisturized Machine Gun Kelly, and I’m the most iconic blouse ever. Bye, diva!”

He briefly vanishes after the doctor introduces a “so straight” cure consisting of Logan Paul’s prime energy drink and four seasons of “It’s Always Sunny in Philadelphia.”

The plan backfires when the woman admits her new attraction to Sivan’s presence.

“I really wish you didn’t say that,” the doctor sighs. “If you invite him in, he starts to multiply.”

Suddenly, three more Sivans, played by “SNL” musical guest Boygenius — the indie supergroup consisting of Phoebe Bridgers, Julien Baker and Lucy Dacus — appear in identical Sivan attire.

“Hey, homie. Thanks for inviting us. C’mon, guys. Let’s give this straight woman what she wants — our tiny little red undies,” the Sivans proclaim.

The cast breaks out in choreography to “Got Me Started,” showing off their rumps in red underwear.

On TikTok Sunday, Sivan called the sketch a “weird f—ing dream.”

“The choreo LMFAO,” he wrote on the clip.