Kylie Jenner talks about their childhood, life, and motherhood while doing Kourtney Kardashian's makeup.

In her recent social media post, the "Keeping Up with the Kardashian" star shared a leggy pic inside the parking lot of her office in Oxnard, California, as she teased her 217 million followers with her new makeup episode over her Youtube channel.

Wearing nothing but an oversized bright pink top and black strappy heels as she paired it with dark oversized sunglasses, Kylie Jenner's Instagram caption reads, "just posted a new youtube video doing @kourtneykardash makeup & thanks @maisonvalentino for this cute fit!!"

Kylie Jenner Does Kourtney Kardashian's Makeup

In a nearly 12-minute video, the mother-of-one gets candid with another special guest for Kylie Jenner's Youtube channel. This time, it's none other than the eldest Kardashian-Jenner sister.

The 23-year-old beauty mogul started by using her best-selling Kylie Skin hair clips to keep the hair away from the face as she puts on makeup.

Being the youngest sibling, she then asked the Poosh founder, who is 20 years her senior, about her makeup journey.

Kourtney Kardashian then recalled their mom, Kris Jenner, who "always had the best makeup."

Moreover, she also added that the Kardashian matriarch owns a gorgeous Yves Saint Laurent lipstick with jeweled heart detail at the top, adding, "She always had the coolest things like that, so Kim and I would always play."

While the beauty mogul applies Kylie Cosmetics' powder foundation and beats them with a blender to set the makeup in place, Kourtney shared that she and Kim used to attend makeup lessons when they were still 12 and 11.

At the time, heavy foundations and skinny eyebrows were a thing since it was during the nineties.

READ MORE: Kylie Jenner Skincare Products Launched in Australia

Kylie Jenner and Kourtney Kardashian's Relationship

As Kylie Jenner's makeup session continues, the two get more personal about their relationship as siblings.

The Kylie Cosmetics founder complimented her sister for being "the oldest and wisest of the family," adding that they are both special since they were the eldest and the youngest among the family.

She then pivoted the conversation to her message to the 23-year-old Kourtney.

It took her some time to answer her sister's question; however, she ended up saying, "Live your life, which is what I always say."

As the beauty mogul applies her lightweight Kylie Cosmetics Skin Concealer, the mother-of-three mentioned that she feels grateful about having a deep relation and connection with God.

While in the middle of their makeup session, the 23-year-old reality star complimented her sister's nose and mentioned that Kourtney and Kendall have the same nose shape.

To recall, in one of the episodes of "KUWTK," she also did the supermodel's glammed makeup.

Kylie Jenner Does Caitlyn Jenner's Makeup

Prior to this, Stormi's mother also worked her magic with Caitlyn Jenner.

For the first time ever, the reality star glammed up her dad as the duo talked about life and their relationship.

READ MORE: Every Item on Kylie's Glam Makeup for Caitlyn Jenner