Aristocrats in Hot Weather

Suddenly, the weather here has gone from a pleasant spring to a humid summer.  As I currently lack all forms of clothing appropriate for this weather, I will be staying indoors for as long as humanly possible.  Is it bad that I've been contemplating the purchase of T-shirts?  

On a more frivolous note, the cherry tree outside the house is finally blooming.  At first, I was a little disappointed that it was white and not pink, but it still looks lovely. 

I'll be racking my brains for an Aristocratically Appropriate summer look for the time being.  Any suggestions?