What would you wear to a large/formal wedding in Italy in July?

[reigsin]

I really am in need of some inspiration for an outfit for my brother's wedding. Venue is gorgeous castle in Tuscany.

I'm late-thirties, 5'9", size 8 and very pale - I don't cope all that well in the heat (nor the cold, but presumably that isn't going to be a problem) so am slightly concerned about sweat.

What would you choose if you were me? I don't even know where to begin looking - there's just too much choice! I'm also not very stylish and lack confidence in my decisions, tending to stick to the same safe styles.

Budget is flexible.

@WaftherAngelsthroughtheskies If you just fancy a coffee with an internet random, I'm your random!

I'm looking for an excuse to buy this dress.

https://www.urbantouch.co.uk/products/ruched-asymmetric-high-neck-satin-midi-dress

https://www.urbantouch.co.uk/collections/dresses/products/floral-print-satin-maxi-dress?variant=44723908116708

Just wanted to add as a hot country dweller that silk is actually quite hot. Fine cotton or linen better although tend to be very creasy You can wear non natural fibres and embrace being sweaty in something that doesn't show sweat patches but it can be difficult to get used to that feeling if you don't live with that sort of climate all the time.

Also, my first thought was Farm Rio, sorry if it's already been mentioned.