Darling Baldufita ! Wheeeeeeee ! Wonderful news ! I wish I could come along- I would LOVE to meet them too and also Stacey London and Clinton Kelly of US What Not To Wear.
I think you should wear something you love and feel really yourself in- Black Orchid . I had a look at your vast and lovely wardrobe - I love a lot of your perfumes .Maybe Barbara Bui ? For spring and white flowers- Fleurs de Citronnier ?
Ultimately, it should be something you are comfortable in .
Have a great time !