Kylie Jenner poses with sister Kendall as both stars show off their toned abs in tiny cut-out dresses for new makeup ad

KYLIE and Kendall Jenner continue to pose together in sexy outfits, as they count down the days until their new joint makeup collaboration drops.

On Friday, Kendall, 26, rocked some underboob on her Instagram, as she wore a tiny, cut-out dress in new photos.

Kylie and Kendall are launching a new joint makeup line.Instagram/Kyliejenner

InstagramThe sisters have been confused as twins[/caption]

A day later, younger sister Kylie joined her in new photos, wearing a matching thin purple dress to promote the line.

Kylie captioned her post: “MY DAY 1. The Kendall X Kylie Collection launches on April 6th at 3pm pst!”

This followed an earlier post of the sisters, captioned by Kylie: “Feeling so blessed and excited to work on yet another makeup collaboration with my sister @kendalljenner!”

Kylie continued: “Our first collection together is still one of my favorites but wow i can’t wait for you guys to see what we have for you this time.”

TWINNING

Fans went crazy in advance of the new collaboration, and insist the sisters – two-years-apart in age – look more like twins.

One excited fan wrote: “YES TWINS.”

Noting the resemblance, another added: “Both are the same person, right?”

A following person called them “twins,” as an additional fan chimed in: “Beautiful sisters!”

Praise for the sisters continued as their fans called them “gorgeous” and dubbed them as “angels.”

The announcement continued to earn positive feedback as someone else wrote: “OMG!!!!! This is BEAUTIFUL.”

KYLIE OPENS UP

Kylie has been praised for her openness since giving birth last month, as she hasn’t backed away from showing off her “stretch marks and extra weight” on her postpartum body.

Last week, The Keeping Up With the Kardashians alum, 24, was lauded for “normalizing normal bodies” when she shared a photo of her stomach with her baby son’s feet resting on it.

Kylie posted the snap of just the bottom of her baby’s feet on her tummy, taking the photo from above.

Her fans flocked to a Kardashian Reddit thread to praise her for sharing the reality of postpartum bodies.

One wrote: “As a mommy, I love the rawness of this picture. The stretched skin, the postpartum tummy, the little extra weight. I just love it.”

Another added: “I love that she posted this. Normalizing normal bodies.”

“For women who have such big platforms, this is the type of content we need from them! I love this so much!” a third posted.

Another fan declared: “Honestly, this is probably the most beautiful picture she’s ever posted.”

KENDALL SHUTS DOWN

Kendall, meanwhile, is battling fans who recently accused the reality star of undergoing a boob job.

Earlier this week, in a thread shared to Reddit, one user posted a series of pictures of a busty-looking Kendall with the text: “Kendall today. Finally convinced she got her boobs done.”

In the images, she looks fuller chested than before in a black crop-top and cut-off drawstring pants.

“Her boob job is one of the best I’ve seen, so natural looking,” one person wrote.

Another agreed: “Right? I’ll take her boobs any day of the week. I would love to wear no bra.”

A third commented: “She looks good truthfully. Not too big, not too small. They look mostly natural.”

Instagram/Kylie JennerKylie and Kendall are teaming up[/caption]

InstagramKylie was open about the changes to her body post pregnancy[/caption]

InstagramKendall was accused of getting breast implants[/caption]