Kidcore is an aesthetic that centers around bright colors, nostalgia for icons from the 90s, and kid themes. While its origins can be traced back to the 70s, 80s, 90s, and 2000s, it appears the aesthetic is a nostalgia-based creation of the 2010s. Common motifs in Kidcore visuals are bright colors frequently used on children's toys, most frequently highly saturated versions of the traditional primary colors (red, yellow, and blue), playgrounds, stuffed animals such as Beanie Babies and TY, robot pets like Furbies, Lisa Frank artwork, rainbows, and other kid themes.

#ootd is an internet abbreviation for "outfit of the day". The hashtag is used on platforms like instagram to show what someone's wearing on a particular day.