I'm mid 60s and have a "go to" set of stuff for warm holidays. I wear what I feel good and more importantly comfortable in and to heck with the latest trend. Many hot climate clothes are classics anyway and haven't changed much overall, in many years.
I stick to navy, tan, sand colours and mix with silver grey, cream and white colours.
I prefer loose elastic waisted very light cotton trousers, the length I use is above the ankle but not mid calf, so short but not like the old pedal pusher length! Wide leg mostly but I have some very good kind of stretchy narrow ankle grazers that are great for travelling in. Loose tops and very light overshirts.
A couple of long dresses in block colours of burgundy, navy/jewel green/earthy colours. No sleeves but I wear them at night mostly and add a sheer "shrug" with a tie at the waist in a contrasting colour.
I don't do beaches. I flipping HATE sand so I just use a strappy sundress or two with shirred bust in very light material for relaxing on the terrace. I don't do bikinis or swimsuits either. Hate pools and the sea, but I like the sun and brightness of the Med.
I get most of my holiday stuff in M+S and Next, occasionally Primark. I'd never spend a lot on holiday stuff, but what I have has lasted a few years now.
I'm a 12-14 depending on how many pies I've eaten....
I Never wear shorts. I hate them on me. So as you can see, I suit myself and don't follow trends much!