I'm going to an event in England (from Ireland) soon that requires me to make and wear a costume. The costume I've chosen has a floral theme and ideally I'd like to decorate it with fresh flowers for effect, but I won't be wearing the costume until the second day of the event. I wanted to arrange the flowers at home to plan where on the costume they should go but then I'd have to bring them to England in my suitcase and keep them fresh until needed.

Is this even possible? Are there any flowers that would be most suited to the project? Or should I just go with fake?

Any advice would be much appreciated. Thanks!