She is good friends with everyone in the Big Bling household and best friends forever with Sugar Bijou. She is distant friends with all of her roommates except Apollo Bloom, whom she dislikes. She is also enemies with Marina Prattle due to unknown reasons. She has 1 point in the guitar skill.
Katelyn Missoni is mentioned in one of the object descriptions from The Sims 4: Movie Hangout Stuff.