In the video, Kylie reflected on the time she and Stormi dressed up like butterflies for the spooky holiday. As it turns out, it wasn't just a creative costume choice.
"When Travis and I first got together we got matching little butterfly tattoos," the makeup mogul explained. "So a butterfly is just a symbol of our relationship and Stormi, so it was really special to do the butterfly costume."
Kylie and Travis famously revealed the matching butterfly tattoos in 2017. Since then, Kylie and the "Highest In The Room" rapper have often sprinkled their lives with butterfly imagery.
Some examples? Kylie gave birth to her and Travis' daughter Stormi Webster in February 2018 after keeping her pregnancy a secret from fans. After revealing her newborn to the world, Kylie shared that she decorated Stormi's nursery with butterflies. Prior to revealing Stormi's name, many fans were convinced the reality star had named her daughter after the insect.
In August 2017, Kylie also received a butterfly necklace from Travis as a gift for her 20th birthday.
Aside from the butterflies, there were other special costumes too: In 2019, Kylie, Travis and Stormi dressed up like superheroes for the holiday.
"We all picked our favorite colors and we were superheroes because Trav always says we are a super family and Stormi is a super child," she explained in the video. "I threw this big party for Stormi, a memory I will cherish forever."
Although the exes are committed to co-parenting their daughter, some fans thought they may have romantically reunited after Kylie posted a photo of her and Travis on Instagram earlier in October.
However, an insider told E! that was not the case.
"They are just friends. There's nothing going on with them," the sourced shared. "They got along well and are great at co-parenting. They spend time together and have figured out a system that works well for them."