If you specifically mean (e.g., mini leather jackets, fedoras, glitter gloves), a relevant academic or critical paper is: Paper Title: "Performing Adulthood: The Styling of Celebrity Children’s Fashion in Digital Media" Author: Dr. Meredith Collins, Journal of Fashion, Media & Culture , Vol. 12(3), 2021.
Here’s a well-regarded paper that explores themes related to (often referring to Baby Mozart , Baby Newton , or other developmental media aesthetics, but likely you mean the visual/style gallery of baby fashion inspired by Michael Jackson or children's luxury/style archives).
Collins analyzes how children’s fashion in Instagram galleries (including “baby MJ” tribute styling) replicates iconic adult celebrity looks to create nostalgia, spectacle, and consumer desire. The paper examines curated image galleries of infants dressed as Michael Jackson — focusing on the replication of his Bad and Smooth Criminal eras — and discusses how these images circulate as a distinct “style gallery” online.