Kylie Jenner teases her toned tummy in a yellow tank top before stripping off to busty sports bra in new selfies

Kylie Jenner took to her Instagram Stories on Saturday evening to share two new sultry mirror selfies with her nearly 400 million followers.

The 27-year-old makeup maven — whose best friend Stassie Karanikolaou shared sweaty workout photos this week — showed inches of her toned midriff in a pale yellow tank top.

The mother-of-two added low-slung white trousers and slipped her feet into a pair of black thong sandals, revealing a dark, vampy pedicure that matched her manicure.

Shortly after, she shared a second image in a stripped down look that included a revealing black sports bra and gray micro shorts.

The busty beauty uploaded the boomerang-style clip in a room lit with purple-pink accents.

Kylie pulled her lustrous, thick dark hair into a half-back style, securing the top portion with a black and beige claw clip.

She flaunted a full face of soft, matte makeup that enhanced her features.

It comes after earlier this week the Kylie Cosmetics founder used social media to share a glimpse at her day-to-day life with daughter Stormi, six, and son Aire, two.

She shares the youngsters with her ex-boyfriend, Houston-bred rapper Travis Scott, 33.

In one image, which didn't show the kids' faces, Stormi checked out her mother's cosmetic products at Ulta with her little brother.

The little girl's curly brown hair fell around her face and Aire wore a backwards red and white trucker hat over his tousle of curls.

Among the roundup of photos was a snapshot of the reality television personality getting her hair and makeup touched up.

She was clad in a white robe as her glam squad tended to her. 

In her caption, Jenner wrote that the captures were 'lost files.'

The post has so far collected over four million likes from the influencer's devoted audience.

When she's not working or taking care of her children, the Kardashians star spend plenty of time with BFF Séassie and boyfriend Timothée Chalamet.

She and the Call Me By Your Name actor keep a low-profile, but sources say the romance is going strong. 

Despite their ongoing relationship, the bombshell has yet to share him on social media. 

'Kylie is turning into her brother Rob — she is choosing to be a homebody for the most part,' a source exclusively revealed to DailyMail.com. 

'For Kylie, it is her family, her kids and then obviously she is all in on hanging out with Timothée.'

She is said to have lost all interest in trying to keep up appearances with industry friends as the insider added: 'Time for going out and doing the Hollywood friendship thing is long past her. She is 27 going on 70.'

The person continued, 'What suits her now is being out there when she needs to be, not because she wants to be. She is so busy with her relationship and being a mom and a businesswoman.'