Dollcore ( ドーリー系 ) is an aesthetic that is inspired by Japanese ball-jointed dolls, both antique and modern. It mostly centers around the transient beauty that lies in a doll-like delicate nature in the form of artistic photography and image edits, but also encompasses doll-like fashion and makeup.

The most extreme fans of the aesthetic follow a practice referred to as "dolling" in which they turn themself into living dolls with the help of bjd kigurumi masks and often also ball-jointed zentai. It highly increased in popularity because of the worldwide media coverage about Lulu Hashimoto , who centers her modeling career around looking like a bjd. She's a hot topic that is still loved by core fans. However, as there has been an issue with masking fetishists not only spamming the the hashtag with pornographic content, but also sexually harassing those participating in it, there were multiple attempts to create a new hashtag as safe space for those who only wear bjd masks for artistic and fashion purposes, such as #dollmaskfc by Millna, but all failed.