Kylie Jenner flaunted substantial cleavage while rocking out to Tems’ 2020 song The Key in a mirror selfie she Instastoried on Monday.

The 26-year-old reality star – who boasts 541.1M social media followers – was modeling an Alo sports bra with matching leggings.

The star exuded confidence as she showed off her trim waist and cleavage in the sizzling post.

 The Kardashians star’s elusive boyfriend of a year – Timothée Chalamet – has been hard at work in New York City producing and starring in Searchlight Pictures’ fully-authorized Bob Dylan biopic, A Complete Unknown.

The 28-year-old Oscar nominee is doing all of his own singing in James Mangold’s big-screen adaptation of Elijah Wald’s 2015 book Dylan Goes Electric!

Kylie Jenner puts on a very busty display showing off Alo bra

Kylie Jenner flaunted substantial cleavage while rocking out to Tems’ 2020 song The Key in a mirror selfie she Instastoried on Monday

Timothée – whose rap alter ego is Lil Timmy Tim – previously warmed his pipes in Paul King’s 2023 musical prequel Wonka and Woody Allen’s 2019 rom-com A Rainy Day in New York.

Kylie worryingly hasn’t been pictured with Chalamet since they packed on the PDA at the Golden Globe Awards in Beverly Hills on January 7.

The Dune: Part Two action star previously romanced his The King leading lady Lily-Rose Depp, Extrapolations actress Eiza González, and Madonna’s eldest Lourdes Leon.

Jenner has two children – daughter Stormi Webster, 6; and son Aire Webster, 2 – from her on/off five-year relationship with disgraced Astroworld founder Travis Scott, which ended in 2022.

Before that, the Kylie Cosmetics founder was notoriously only 16 when she began dating Grammy-nominated rapper Tyga in 2014, but they ended their romance just three years later.

Kylie and her famous family will next executive produce and star in the 10-episode fifth season of The Kardashians, which premieres May 23 on Hulu.

On February 19, the Keeping Up with the Kardashians spin-off won reality show of the year at the People’s Choice Awards after winning the best docu-reality series trophy at the 2023 MTV Movie & TV Awards.

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The 26-year-old reality star doesn’t post unless it’s for profit and, this time, it was a glorified paid partnership with athleisure attire company, Alo

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Kylie – who boasts 541.1M social media followers – was modeling the $54 Alo ‘Splendor Bra’ with matching leggings

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The LA-based premium yoga apparel company – founded in 2007 by Marco Degeorge and Danny Harris (pictured in 2020) – grosses around $200M a year in sales and typically pays brand ambassadors about $20 per thousand followers

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The Blast reported on October 11 that Jenner earns $847,544 per sponsored Instagram post while Influencer Marketing Hub claimed she earns an eye-popping $2,386,000 per sponsored Instagram post

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The Kardashians producer-star’s elusive boyfriend of a year – Timothée Chalamet (pictured last Thursday) – has been hard at work in New York City producing and starring in Searchlight Pictures’ fully-authorized Bob Dylan biopic, A Complete Unknown

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Kylie worryingly hasn’t been pictured with the 28-year-old Oscar nominee since they packed on the PDA at the Golden Globe Awards in Beverly Hills on January 7

The Kardashians are back in season five teaser trailer

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Jenner and her famous family will next executive produce and star in the 10-episode fifth season of The Kardashians, which premieres May 23 on Hulu