David Arquette, Balthazar Getty, Brian Austin Green, Stephen Dorff, Mark-Paul Gosselaar, Danny Boy O'Connor, Heather McComb appear in the film, while Harold Hunter, Justin Pierce, Jenny Lewis, Sara Gilbert, Charlie Sheen, Leonardo DiCaprio, Kevin Connolly, Mark Wahlberg, Corey Feldman, Michael Rapaport, and Jonathan Brandis appear in the film through footage shot by Frye.

One of the major narratives of the documentary was her many friends who died at a young age from suicide or drug overdose, including Jonathan Brandis, Shannon Wilsey, Rodney Harvey, Harold Hunter, and Justin Pierce.

Soleil Moon Frye spent four years going through footage she had shot, diaries, and voicemails, from when she was a teenage girl in the 1990s.

The website's consensus reads, "It's insular and uneven, but Kid 90 also presents a raw and affecting first-person look at the experience of growing up in the spotlight.

[6] Zach Ruskin for the San Francisco Chronicle gave the film a "Little Man Clapping", roughly translating to a 4/5 stars, opining "Other documentaries have made this point in grander, more artistic ways, but there is value in seeing this raw footage that accompanies an adolescence spent in front of the camera.