Kylie Jenner shows off her cleavage as she models RAD lipstick for launch with Kourtney Kardashian

Kylie Jenner has already plowed back into work full time.

On Saturday the daughter of Kris Jenner shared several more photos from her KOURT X KYLIE makeup launch with her sister Kourtney Kardashian.

The girlfriend of Travis Scott was wearing a plunging beige top and a white robe falling off her shoulders with her black hair worn down.

The TV star said she was wearing RAD on her lips and the line was launching in just three days.

Also on Saturday Kourtney shared a new bikini image where she looked half her age.

The 39-year-old girlfriend of Younes Bendjima was plugging her new makeup collaboration with sister Kylie Jenner, 20. 

The products will be released on Tuesday.

On Friday, the beauties posed side by side in white bikinis.  Kylie and Kourtney practically looked like twins.

The mom to baby Stormi was the one who captioned the image with, 'MOMMYS ☺️.. oh and If you didn’t already hear.. we’re COLLABORATING and it drops in 4 DAYS! KOURT X KYLIE @kyliecosmetics.' 

The line is called KOURT X KYLIE, and consists of three eyeshadows and three lipkits.

Their first image together was shared on Wednesday. They both wowed in nude lingerie before taking to her stories to share glimpses of what fans can expect from the line.