Hermione couldn't complain about her bosses requests that she not recycle her dresses since he gave her a nice bonus for her time with each event that basically paid for each new outfit. Truth be told this quirk of his had created a wardrobe that was quite heavy in the gown department so she was more than happy to have the opportunity to get rid of one, or two if Luna decided she couldn't make up her mind.
"Of course you should try it on," she reached up and took the dress from where it was hanging. "You can use my room," she pointed through a door off to the left.