Take a moment and think about one of your characters. Imagine he or she is sitting at home with no plans for the night. What is he or she wearing?
Shoes and socks? Or just socks? Or is your character barefoot?
Chilling in jeans? Yoga pants? Pajamas? Only underwear? A tux? A suit? A skirt? A dress?
A t-shirt? A jersey? A nice top? A blouse?
What does what your character is wearing tell you about the character? What does it say about his/her relationship with the people he or she lives with? (Family, roommate significant other, spouse). What about the other people they spend time with?
Even if you never include what your character wears on his/her own in the story, it can help you to develop your character’s personality and get to know something about them, including what they think about other people and what they want.