How can i make AMAZING Relounge of a Fashion Store?

How can we make the re-launch of our fashion store a:mazing? We constructed a new building to move our family business into. We sell designer clothes. Can anyone suggest a re-launch that will be amazing? We have thought of ideas like a fashion catwalk show but they are just too common. We want something trendy, unique and memorable. Can anyone help us come up with some ideas? Thanks!