Kim Kardashian and Kylie Jenner
Kim Kardashian (L) used to joke that Kylie Jenner (R) would be a mom by Season 17 of “Keeping Up With the Kardashians.” In this photo, the TV personalities arrive at the 2013 MTV Movie Awards at Sony Pictures Studios on April 14, 2013 in Culver City, California. Getty Images/Alberto E. Rodriguez

Kylie Jenner and Kim Kardashian wore matching outfits on National Sister Day despite jealousy rumors.

Jenner and Kardashian celebrated National Sister Day by having a twinning moment. The “Keeping Up With the Kardashian” stars posed in matching body suits. Kardashian shared the snap on Instagram.

“Not sure what I would do without them!!!! #HappyNationalSisterDay,” she wrote in the caption.

Kardashian shared a series of snaps featuring their three other sisters Kylie Jenner, Kourtney Kardashian and Khloe Kardashian.

The snaps were shared just days after the rumored jealousy involving the two reality stars made headlines. Jenner and Kardashian are often compared due to their posts on social media.

Last week, Jenner shared a snap of her sporting an all-black outfit with short hair. She styled her hair in a ponytail that many found to be a replica of Kardashian’s look days prior when she uploaded a photo during her grandmother’s 85th birthday. There were speculations that Jenner has been copying Kardashian.

However, Jenner surpassed Kardashian in terms of their earnings per IG post. Jenner reportedly receives $1.27 million per Instagram campaign while Kardashian earns $910,000.

A few weeks ago, there were rumors suggesting that Jenner was expecting her second baby with Travis Scott. The speculations started after Khloe shared a clip on social media during her 35th birthday where one was overheard saying, “I’m pregnant” as the camera pans across a doughnut tray and fans immediately concluded that it was Jenner’s voice.

However, Jenner shut down the pregnancy rumors by sharing new bikini photos to promote her new products for Kylie Cosmetics. The TV star proved everyone that she was a complete bombshell by showing off her slender frame in a tan bikini top with matching shimmering tan mini skirt.

Her older sister, Kardashian, was very supportive. “So pretty,” Kardashian wrote.

In related news, Jenner is also close with Scott Disick’s girlfriend Sofia Richie. According to an insider, Disick was really happy that Richie and Jenner have become so close because for him, it means that her girlfriend has been further accepted into the Jenner-Kardashian clan.