According to the source, the 20-year-old makeup mogul is a mother who is "more conscious of herself" now more than ever.
"During Kylie's pregnancy, she wasn't getting her usual fillers or putting on much makeup," the source says. "Kylie really fell in love with the natural look, and wanted more of that, so she decided to stop putting filler in her lips.
“Despite the fact that Kylie is a master of branding and has made an almost billion-dollar business off her lips and cosmetics, once Stormi was born, Kylie realized she was a mother first, and that is a big reason she has been sporting the more natural look," the source adds. "Kylie is a master of branding, and she plays with the concept of mother -- the more natural look -- and her Kylie Cosmetics look, full glam."
"Kylie likely had Juvederm Ultra or Restylane injected," Schafer said. "From the size difference that she achieved with the filler I would suspect that she had between one to two syringes. Now she likely has some residual filler, which will slowly metabolize naturally."