They also shared some videos on their social media stories, in which the 33-year-old - who is believed to be pregnant for the first time with National Basketball Association star boyfriend Tristan Thompson - remarks on their similarities: 'Don't we look like real sisters right now? The Kylie Lip Kit mogul was just 9-years-old when the American reality television series first aired on the E! cable network.
Showing off her lipkits there was one pink and one blue.
Choosing to ignore the speculation, however, Kendall chose to instead focus on the hilarity of sporting a matching outfit to her sister, as she shared a cute tribute to Kylie on her website kendallj.com.
Are all these blues meant to be a clue? "They're nothing special. In my eyes, they're just my family", she said. She was also quick to admit that her family life was the "exact opposite" of that of the Kardashians and Jenners, saying, "We are insane, but we do normal people stuff".
She captioned it "Sasha's shirt", and fans commented things like "Ur pregnant for sure", "preeeeegnant", and "where is the baby Kylie".
Khloe's boyfriend, with whom she is reportedly having her first child, is reportedly trying to deal with the torment as best he can. "All the sisters are super excited, and Kris has been helping as well".
A hint of a "baby bump" could be seen as she turned to the side in the clip, underneath her velour hoodie.
For her part, Kylie has always wanted to have kids sooner than later. She had a tiny lower belly pooch but not a big pregnancy type bump! "We go to the beach, my mom goes to work, I go to school". She revealed her plans on settling down and having a family of her own. I see the hints you dropping girl.