Curious to learn how to earn a full .50 star "Unworn Bonus"?
The value of the unworn garments must total at least $1,400 dollars. 

In order to get the full .30 star Seasonal Bonuses, your submitted look must match the season for that particular Style Challenge.

Borrowing can also help with both Unworn and Seasonal Bonuses. However, the $ value of a borrowed garment that is applied to your bonuses is capped.