There is no need to be mean with your siblings.
Janet goes to her brother Joe's room to ask him if he thinks her shoes go with her dress.
Joe wants to answer Janet's question.
Joe tells Janet that they do go together and that she looks great.
Joe tells Janet that everything on her looks hideous and that she shouldn't bother trying.
Janet is delighted that her brother helped her choose her outfit and that he's so complimentary toward her.
Janet is hurt and embarrassed and feels self conscious so she begins to cry.