The purple shirt- which I (Yotan) have done
A yellow shirt- Exactly the same, for the most part.
Pajamas- A red shirt with very odd sleeves and black loose pants.
The "Date" version- seen in episode 20, black dress pants, a grey shirt, and a tan overcoat (Yohji and his crazy fashions...)
Second half of the Series- Yohji's red shirt with black sleeves and tan pants.