Kylie Jenner strips down to skimpy sports bra with sister Kim Kardashian during action-packed birthday getaway

Kylie Jenner stripped down to a skimpy sports bra with her sister Kim Kardashian as she gave fans a glimpse at her action-packed 29th birthday getaway. 

The beauty mogul, who recently posed nude for her latest Khy campaign, uploaded an Instagram post on Saturday to share snaps after whisking herself away on a tropical vacation with her family. 

It came shortly after the TV personality also had a blast during a lavish 'princess kitty'-themed party at her Beverly Hills mansion last week. 

In one image from the new photo series, Jenner struck a pose alongside Kardashian as well as her other siblings Kendall Jenner and Khloe Kardashian while outdoors. 

Both the Kylie Cosmetics founder and Kardashian showed off their toned midriffs in plunging sports bras. 

Jenner also opted for a black sweatshirt that was unzipped at the front while her face was covered by a sturdy helmet. 

Her sisters also donned matching helmets before taking part in what appeared to be a lighthearted paintball match. 

The birthday girl later snapped a closeup selfie while wearing the red and black-colored helmet amid the game. 

Jenner also soaked up the warm sunshine during the trip as she lounged outside for another selfie. 

She opted for a minimal makeup look and allowed her darker locks to flow down naturally past her shoulders. 

The mom-of-two enjoyed bonding time with her sisters and paused for a picture with Kendall as they explored the scenic area around them. 

She also jumped into a four wheeler which was driven by Kardashian's boyfriend Lewis Hamilton who was tagged in the reel. 

Jenner and Hamilton could be seen waving towards the camera before the F1 racer sped down a dirt track. 

Another slide showed a gold 'Happy Birthday' sign set up next to a large window that offered views of the ocean and swaying palm trees. 

Jenner gave her followers a closer look at tasty drinks she was able to indulge in during the relaxing getaway. 

One snap also showed a breathtaking sunset while another was taken from inside a cave. 

While strolling around the tropical destination, the star also took a photo of vibrant yellow flowers. 

In the caption of the post, Jenner simply penned: 'hello 29 >.' 

However, the media personality's older sister Kourtney Kardashian as well as boyfriend Timothee Chalamet did not appear and were not tagged in the latest Instagram carousel. 

Daily Mail has reached out to reps for Jenner for comment, but has yet to hear back. 

Before the recent vacation, Jenner also spent time with family and close friends during a bash at her mansion in Beverly Hills shortly before her August 10 birthday. 

The theme had been 'princess kitty' with both the beauty mogul and guests wearing pink-colored attire.  

Jenner offered a look inside the party by sharing snaps to her Instagram account. 

She flaunted her toned figure in a hot pink minidress and also slipped into pumps with pink feathery details. 

The reality star additionally sported a pink feathery boa that was draped behind her and a pink crown was placed over her dark locks for a final touch. 

Guests sipped on drinks from clear cups that were decked out with colorful bejeweled details. 

Desserts were displayed on a large counter and included a pink bikini cake as well as a circular cake topped with thick white frosting and jeweled pieces. 

Another circular cake was covered with pink sugary frosting as well as cats made from icing on top.   

Balloons covered one portion of the ceiling and included hues of light pink, blue, purple and yellow. 

Guests included Jenner's siblings, Hailey and Justin Bieber as well as Devon Lee Carlson. 

However, Chalamet was not seen making an arrival to the birthday party last week. 

Both Jenner and the Hollywood actor were last pictured together in public last month in July as they attended the FIFA World Cup Final in New Jersey. 

The beauty mogul has been keeping busy and recently posed nude for the latest campaign for her Khy brand. 

She promoted an upcoming footwear collection in collaboration with Giaborghini. 

'I've worn @giaborghini for years, so this one felt right i got to create my dream footwear for @khy handmade in italy,' Jenner penned on Instagram this week.

'I reworked every detail over and over until they felt just right and completely effortless. coming 08.21 to khy.com.'