‘Mommy nights are the best nights,’ she captioned the post on Monday, along with a heart emoji. Adorably, Kylie’s mother commented on the post: ‘I love you my precious girl.’

Kylie, looking glam with her hair all done up and in a 𝑠e𝑥y black look, followed it up with a string of solo selfies and video of her 𝑠e𝑥y outfit.

Kylie Jenner supported boyfriend Timothee Chalamet at the LA premiere of his film Wonka on Sunday evening

She panned the camera down to her svelte waist as she sat in her car before gently shaking her ringlets for the camera.

Kylie looked gorgeous with a dashing of blush, dazzling diamond earrings, and a matte tint of lipstick.

Her mother displayed her edgy side with glossy sunglasses, a sleek burgundy coat, and flawless coat of makeup.

The duo may have been en route to the Los Angeles premiere of Timothee’s movie Wonka. Kylie skipped the red carpet but was spotted sneaking into the theater with Kris ahead of the screening.

Kylie and Timothee, 27, were first romantically linked in April after reportedly hitting it off at a Paris fashion event months earlier.

They hard launched their relationship by putting on a cozy display at Beyonce’s concert in September — which was also attended by her ex-boyfriend Travis Scott.

A source told PEOPLE last week that Timothee is in ‘awe’ of his new girlfriend and ‘everything she is accomplishing.’

A source also told the publication the actor ‘especially thinks she is an amazing mom.’

Jenner followed up the selfie with a series of glam snaps

She showed off her svelte waist in a video showcasing her outfit

The beauty looked gorgeous with her hair styled into loose ringlets and a flawless coat of makeup

She may have been arriving to boyfriend Timothee Chalamet’s Wonka premiere

Chalamet pictured at the Los Angeles premiere of Wonka on Sunday

Kylie skipped the red carpet but was spotted sneaking into the theater with Kris ahead of the Wonka screening

Jenner adorably commented, ‘I love you my precious girl’

Kylie shares two kids – daughter Stormi, five, and son Aire, almost two – with ex Travis Scott.

The source went on to add that the reality star is ‘incredibly happy’ with Timothee and calls him her ‘boyfriend.’

‘He is very supportive of her career and she of his,’ the insider went on. ‘They both try to attend important events for each other.’

The source also divulged that the Kardashian/Jenner clan ‘loves him’ and that he is ‘very good for Kylie.’

‘Since dating him, she seems very content, relaxed and focused.’