He can’t help the rain, but the material Dior used looks very, very cheap.
My auntie drilled some rules about fabrics and colours into me when I was very young. I don't really know much about fabrics or fashion etc, but that plus some things I've learnt as an amateur photographer. Deep colours look lovely in rich fabrics. Even pastel colours look nicer in rich fabrics. If you want to wear black, wear the deepest black possible, in the richest possible, no-shine fabrics (remember Smegsy's 'papped' photos? Her clothes looked so cheap. Lightbulb moment, was she cosplaying Ms. Turd?)
Light fabrics for spring/summer, heavier for autumn/winter. No shiny fabrics for day events unless they're to be held indoors/you deliberately want to catch attention (like at exhibitions etc). Men's suits (or shirts unless for certain events) should not be made from fabric with any amount of shine - a rule that many men around me tend to break and it puts me off completely.
And absolutely, absolutely no shiny fabrics if you know you are going to be photographed.
Of course, these rules are thrown out of the window where Indian weddings/award functions etc are concerned. But then that's a different context.
If barely-gets-to-buy-clothes me has the sense to realise all of this, Sparry should have been advised on this too. And Smegs has no reason not to understand any of this, especially given that her father was a lighting director.