Theft is wrong.
Vanessa is looking around in the mall when she sees a shirt she likes.
Vanessa wants to take the shirt home.
Vanessa takes the shirt and brings it to the register to pay for it.
Vanessa tries on the shirt and walks out the store without paying.
Vanessa is able to wear the shirt to a party the next day.
Vanessa is stopped by the mall security when the store's alarm goes off.