Do hollister employees have to wear hollister clothes?

They do! They must wear Hollister jeans (they purchase their first pair at half price). Depending on the store, they may or may not be given a polo or other Hollister shirt.

EDIT. If you ask any of the employees at the store, they will tell you that they are not required to wear Hollister clothing and that they do get 50% off discounts on select items. I've worked at Hollister for 2 years and honestly it depends on the manager who works there. There is this list called AAA or Triple As (either or) that has a list of clothing items that have the 50% off discount. Employees are usually allowed to use the discount on two tops and one pair of bottoms. Employees are supposed to wear the AAA for work but to escape getting in trouble for that A&F has stated that employees are not required to wear Hollister clothing but must wear clothing that is in the current style and in the company colors of gray, navy and white. Some managers could care less if you wore AAA as long as your clothes were in the color scheme you were good. Other managers, however, will not schedule someone if they refuse to wear/buy AAA.