I have a perpetually warm child. Perfectly happy in 97% of British weather in t-shirt and shorts.
He hates trousers. In recent years since starting school, I can, by picking my arguments get him to wear trousers on the few occasions that it really matters because he now understands that I only ask him when I have a very good reason. About 360 days of the year he will happily wear shorts, even during the recent snow.
It's been much easier since he's been old enough to be vocal about what his clothing needs are. His toddler years were a bit of a misery for both of us in that department. By 2, he could strip far quicker than I could dress him and he couldn't articulate what about clothes offended him so much. He utterly rejected dungarees by 2.5 and I had to concede defeat on that fairly quickly. I remember lugging his coat around all bloody winter because he absolutely would not wear it, and I was so convinced that he'd love the vehicles all over it. I remember trying to dress him, sitting over him to pin him down in desperation, trying to get clothing on to his flailing limbs while he screamed and screamed. Trying to get him and a baby sibling out of the house was a very long, tedious battle every time.
With hindsight, it joins up that he is very fussy about texture of clothes and warmth level but I didn't know that at the time. Dominating and imposing my will over his simply did not work, so yes, I gave up after quite a long time and we are both so much happier for it.
Interestingly, at a science museum, the thermal imaging camera showed him glowing mostly white hot compared to me and his ("normal") brother glowing red hot with small patches of white.
So as long as a child shows no signs of distress, I'm happy to leave them be.
(Although I did judge the parents who let their little girl attend an event in just Brownie uniform, no coat or anything extra on an event that was lasting 2 hours outside and unsheltered on a well forecast sub-zero night. She ended up shivering under my blankets snuggled up with me as I was heavily pregnant and knew I'd get cold sitting in a camping chair so had taken extra layers to keep warm.)