Justin Suarez is Hilda's son and therefore Betty's nephew. Justin supports Betty in her dreams in the fashion world. He himself is very fashion conscious and seems more keen for the industry than Betty.
[about Justin's Ralph Lauren jacket..]
Marc: Do the kids at school like it?
Justin: No, they don't get me
Marc: Word of advice.. be yourself... wear what you want... just learn to run real fast
Justin: I don't want flan, I'll get fat
Hilda: Honey, you're a boy, it doesn't matter if you're fat or not