Kylie Jenner was snapped stepping out with rumored boyfriend Tyga on Thursday in Calabasas, California on the heels of the major diss by the rapper's ex, Blac Chyna, on Instagram over the #KylieJennerLipChallenge.

"The daughter of Bruce Jenner was spotted staying close to her much older man sporting yoga leggings and Nike sneakers for an overall athleisure vibe," Daily Mail reported.

"Kylie added some stylish flair by topping her black workout tank top with a leather jacket and covered her eyes with color coordinate sunglasses."

When she noticed the cameras, Kylie Jenner immediately separated herself from rumored boyfriend Tyga and hid her face from the paparazzi.

"Meanwhile, Tyga - real name Michael Ray Nguyen-Stevenson - opted for a much flashier getup," the article added. "The father-of-one dressed in a vintage basketball print T-shirt, sweatpants, patterned shoes and diamond watch."

A couple of days ago, Blac Chyna posted a photo on her Instagram where Tyga's baby mama was seen lying on her back on the carpet while taking the selfie. She didn't caption the photo but the shade was clearly aimed at Kylie Jenner because of the overblown plastic lips she was wearing.

The hashtag KylieJennerLipChallenge became trending in social media as young girls tried to copy Tyga's rumored girlfriend's pouty lips by sucking on shot glasses. The challenge backfired when their lips got swollen and blood vessels popped.

Kylie Jenner has since addressed the whole #KylieJennerLipChallenge as she said that she doesn't encourage other young girls to look like her and that they should stay true to themselves at all times.

Blac Chyna and Tyga's rumored girlfriend Kylie Jenner has supposedly been having a Twitter and Instagram feud when they posted the expensive gifts that the rapper reportedly gave them.

"KUWTK" reality star Kylie Jenner also fueled the feud when she posted on Instagram pink wigs while wearing sexy clothes, right after Blac Chyna posted a series of colorful faux hair on her own Instagram promoting a line of wigs.