You should dress up for special occasions.
Mandy is going to a special and formal dinner with family that she doesn't see often.
Mandy wants to get ready in a short time to deal with traffic on the way.
Mandy goes with her reliable black dress with shoes that match.
Mandy dresses in her casual clothing, so she can leave in a hurry.
The family gives Mandy a lot of compliments on her dress.
The family thinks badly of Mandy because of what she choose to wear.