Kylie Jenner was without her boyfriend Timothee Chalamet on Thursday night as she attended the LA premiere of The Moment

Kylie Jenner left her Oscar nominated boyfriend Timothee Chalamet at home as she joined pop superstar Charli XCX at the Los Angeles premiere of The Moment on Thursday night.

The makeup mogul, 28, stars in the highly anticipated ‘tour mockumentary’ about Charli XCX’s career-defining Brat era – marking Jenner’s acting debut.

For her big night, Jenner flashed her enviably toned midriff in a ruffled sleeveless blouse.

The mother-of-two styled the unique top with a low-rise black maxi skirt made of silky fabric.

Her dark brown hair was slicked back off her face in a bun and she opted for a more natural glam makeup look.

She walked the red carpet solo outside LA’s Fine Arts Theatre before teaming up with Charli XCX for some photos.

Kylie Jenner was without her boyfriend Timothee Chalamet on Thursday night as she attended the LA premiere of The Moment

Kylie Jenner was without her boyfriend Timothee Chalamet on Thursday night as she attended the LA premiere of The Moment

The unlikely duo smoldered for the cameras together, with Charli XCX wowing onlookers in a scantily-clad outfit.

The Grammy-winner, 33, modeled a tight gray corset styled with a black PVC bra and matching hot pants.

She carried a funky faux fur shall in one hand as she strutted her stuff on the red carpet with fans cheering on from the sidelines.

To complete her premiere look, the UK-born star slipped on sheer tights and black heels.

Jenner and Charli XCX looked to be having a blast as they were caught giggling with photographers. 

The pair also posed for photos with The Moment director Aidan Zamiri.

Jenner greeted the auteur, who has also worked with the likes of Chappell Roan and Billie Eilish, with a warm hug.

The Moment, which Charli XCX previously described as a ‘tour mockumentary,’ premiered at the Sundance Film Festival in Park City, over the weekend.

Jenner stars in the highly anticipated 'tour mockumentary' about Charli XCX's career-defining Brat era

Jenner stars in the highly anticipated ‘tour mockumentary’ about Charli XCX’s career-defining Brat era

Jenner flashed her enviably toned midriff in a ruffled sleeveless blouse

Jenner flashed her enviably toned midriff in a ruffled sleeveless blouse

The mother-of-two styled the unique top with a low-rise black maxi skirt made of silky fabric

The mother-of-two styled the unique top with a low-rise black maxi skirt made of silky fabric

The moment marks Jenner's acting debut

The moment marks Jenner’s acting debut

Jenner's dark brown hair was slicked back off her face in a bun

Jenner’s dark brown hair was slicked back off her face in a bun

She walked the red carpet solo outside LA's Fine Arts Theatre before teaming up with Charli XCX for some photos

She walked the red carpet solo outside LA’s Fine Arts Theatre before teaming up with Charli XCX for some photos

The unlikely duo smoldered for the cameras together

The unlikely duo smoldered for the cameras together

Charli XCX wowed onlookers in a scantily-clad outfit

She showed it off from all angles during her red carpet stint

Charli XCX wowed onlookers in a scantily-clad outfit

Jenner and Charli XCX looked to be having a blast as they were often caught giggling with photographers

Jenner and Charli XCX looked to be having a blast as they were often caught giggling with photographers

The beauties cozied up to The Moment director Aidan Zamiri

The beauties cozied up to The Moment director Aidan Zamiri

Jenner greeted director Aidan Zamiri with a warm hug

Jenner greeted director Aidan Zamiri with a warm hug

Jenner posed for a group photo with the cast and crew of The Moment ahead of the screening; (L-R) Tish Weinstock, Bertie Brandes, Kate Berlant, Aidan Zamiri, Charli XCX, Trew Mullen, Richard Perez and Hailey Gates

Jenner posed for a group photo with the cast and crew of The Moment ahead of the screening; (L-R) Tish Weinstock, Bertie Brandes, Kate Berlant, Aidan Zamiri, Charli XCX, Trew Mullen, Richard Perez and Hailey Gates

Jenner was spotted chatting with The Moment costar Trew Mullen

Jenner was spotted chatting with The Moment costar Trew Mullen

Charli XCX and director Aidan Zamiri were first seen outside the Fine Arts Theater

Charli XCX and director Aidan Zamiri were first seen outside the Fine Arts Theater

The Moment, which Charli XCX previously described as a 'tour mockumentary,' premiered at the Sundance Film Festival in Park City, over the weekend; (L-R) David Hinojosa, Bertie Brandes, Aidan Zamiri and Charli XCX

The Moment, which Charli XCX previously described as a ‘tour mockumentary,’ premiered at the Sundance Film Festival in Park City, over the weekend; (L-R) David Hinojosa, Bertie Brandes, Aidan Zamiri and Charli XCX

The film follows Charli XCX in the lead up to her first headline tour and explores her personal and public narratives.

Through the scripted scenes it shows how subculture is transfigured by commercial success, with record executives contemplating how they can make it a ‘brat summer forever’.

The Moment is slated for nationwide release on February 6. However, select theaters in the United States will kick off The Moment premieres on January 30.

Thursday’s premiere in LA proved to be a star-studded occasion as the biggest names in music and film flocked to the Fine Arts Theatre, which is located in Beverly Hills.

Grammy Award-winning singer Chappell Roan made a rare red carpet appearance in support of fellow musician and close pal Charli XCX.

The Missouri-born talent, 27, modeled a mint green nurse-inspired look complete with a latex uniform and matching nursing cap.

Her face was painted with her signature white base, which made the blue, yellow and pink tones of her eyeshadow pop.

Demi Lovato showed off her flat tummy in a tiny black bra top and high-waisted satin pants.

Grammy Award-winning singer Chappell Roan made a rare red carpet appearance in support of fellow musician and close pal Charli XCX

Grammy Award-winning singer Chappell Roan made a rare red carpet appearance in support of fellow musician and close pal Charli XCX

The Missouri-born talent, 27, modeled a mint green nurse-inspired look complete with a latex uniform and matching nursing cap

The Missouri-born talent, 27, modeled a mint green nurse-inspired look complete with a latex uniform and matching nursing cap

Demi Lovato showed off her flat tummy in a tiny black bra top and high-waisted satin pants

Demi Lovato showed off her flat tummy in a tiny black bra top and high-waisted satin pants

The Disney Channel alum, 33, was joined by her husband and fellow musician Jordan 'Jutes' Lutes

The Disney Channel alum, 33, was joined by her husband and fellow musician Jordan ‘Jutes’ Lutes

Lovato layered up her premiere outfit with a cropped satin jacket and accessorized with silver chain necklaces

Lovato layered up her premiere outfit with a cropped satin jacket and accessorized with silver chain necklaces

Scout Willis left little to the imagination as she went braless under a see-through black polkadot dress

Scout Willis left little to the imagination as she went braless under a see-through black polkadot dress

Matty Healy's fiancee Gabbriette flaunted her tiny waistline by rocking a racy tie-front top

Matty Healy’s fiancee Gabbriette flaunted her tiny waistline by rocking a racy tie-front top

Challengers actress Hailey Benton Gates turned heads in an apron-like black leather jumper layered over a suede jacket and blue button-up shirt

Challengers actress Hailey Benton Gates turned heads in an apron-like black leather jumper layered over a suede jacket and blue button-up shirt

Hostel director Eli Roth was on hand for the premiere event with his wife Vittoria Buraschi

Hostel director Eli Roth was on hand for the premiere event with his wife Vittoria Buraschi

Vogue contributing editor Tish Weinstock sizzled in a low-cut gown and black feather boa

Vogue contributing editor Tish Weinstock sizzled in a low-cut gown and black feather boa

The Disney Channel alum, 33, was joined by her husband and fellow musician Jordan ‘Jutes’ Lutes. 

Lovato layered up her premiere outfit with a cropped satin jacket and accessorized with silver chain necklaces.  

Scout Willis left little to the imagination as she went braless under a see-through black polkadot dress.

The nepo baby, 34, walked the red carpet in heels with flaming red toes and accessorized with what looked to be vintage drop earrings. 

Matty Healy’s fiancee and Gen-Z style icon Gabbriette flaunted her tiny waistline by rocking a racy tie-front top and a low-rise black skirt.

Challengers actress Hailey Benton Gates turned heads in an apron-like black leather jumper layered over a suede jacket and blue button-up shirt.

Hostel director Eli Roth was on hand for the premiere event with his wife Vittoria Buraschi.

Vogue contributing editor Tish Weinstock sizzled in a low-cut gown and black feather boa.  

Meanwhile, Jenner's boyfriend Timothee Chalamet was spotted on the East Coast attending a special screening of his Oscar nominated film Marty Supreme in New York

Meanwhile, Jenner’s boyfriend Timothee Chalamet was spotted on the East Coast attending a special screening of his Oscar nominated film Marty Supreme in New York

The actor, who earned a Best Actor nod for the film, was bundled up in a puffer jacket, scarf and hat for the nighttime event

The actor, who earned a Best Actor nod for the film, was bundled up in a puffer jacket, scarf and hat for the nighttime event

The screening and Q&A was held at the SVA Theatre

The screening and Q&A was held at the SVA Theatre

Jenner has been helping Charli XCX promote The Moment ahead of its release in the United States on January 30

Jenner has been helping Charli XCX promote The Moment ahead of its release in the United States on January 30

Jenner recently appeared in the music video for Charli XCX's song Residue, which is featured in The Moment

Jenner recently appeared in the music video for Charli XCX’s song Residue, which is featured in The Moment

Jenner’s appearance at The Moment premiere came just hours after it was claimed that her and her boyfriend Chalamet are eyeing a major next step in their relationship.

According to Us Weekly, the hot couple are reportedly ‘very serious’ and have ‘talked about getting engaged this year.’

The insider claims the next step already feels inevitable, revealing that Jenner has begun referring to Chalamet as her ‘husband.’

‘Kylie definitely runs the show, and Timothée loves it,’ the source added. ‘It is a great balance between both of their personalities, and it works.’ 

The news comes after the couple appeared relaxed and giddy as they arrived hand in hand at a private airport terminal, where they were spotted boarding a sleek private jet for a romantic getaway last week.

It also comes as the pair are said to be living together, with Chalamet becoming involved in the lives of Jenner’s children, Stormi, 7, and Aire, 3, whom she shares with Travis Scott.

A source claimed to Page Six that the couple have been living together in Los Angeles for more than a year and behave ‘like they’re basically married already.’

Jenner's appearance at The Moment premiere came just hours after it was claimed that her and her boyfriend Chalamet are eyeing a major next step in their relationship; the couple seen in December

Jenner’s appearance at The Moment premiere came just hours after it was claimed that her and her boyfriend Chalamet are eyeing a major next step in their relationship; the couple seen in December 

‘They’re obsessed with each other and always together,’ the insider added.

Chalamet was recently received his third career Oscar nomination for his performance in Marty Supreme.

The star has dominating awards seasons, taking home Best Actor honors at the Golden Globes and Critics Choice Awards.

Jenner joined Chalamet at both high-profile events and many fans predict she will be by his side at the Academy Awards on March 15.

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