I purchased my daughters junior and senior prom dresses here. Both times we received excellent service and never felt pressured to buy anything. The girls that work there were patient with her. She tried on many dresses and they never once made us feel like we were overstaying our time.
One thing that is really nice is when she bought the dress they noted which high school she went to so they wouldn't sell it to someone else at her high school.
There is a great selection of dresses to choose from as well.