Hampton Court, here I come!

Today the office, tomorrow the Hampton Court Flower Show.  Only the second time I have ever been, so I am VERY excited.  On my first visit, more than 10 years ago, it was so hot that the flowers in the marquee were wilting badly.  Not a problem I expect to experience tomorrow, as it is still raining.  Will it ever end I wonder?  At least the plants will be happy.  Now….what to wear?  Can one do flower show chic and keep dry at the same time?