Not only a toast newbie, but a Mumsnet newbie here - my first post

I stumbled across this thread and those huge discounts inspired me to try out a few dresses. I’ve wafted into a couple of the toast shops before but the prices wafted me back out again.
I have some questions and I’m hoping someone might be able to give me some ideas...
I’ve got 3 dresses, and have basically fallen in love with all of them, even though they’re quite a different shape to what I’d usually wear - especially all the fabric in the skirts. But something weird happens when I put them on - I just feel like myself, in a comfortable, confident kind of way. It’s nice!
But what I’m wondering is - do you see these toast dresses as just for the summer? I’m trying to think of how to wear them in winter/cooler days, otherwise even at 70% off I definitely can’t justify keeping all three. I think they’d all work with thick tights and shoes/boots, but what about layers? None of my cardigans seem to work over the sleeves. I’m a size 8/10 and most of my clothes are a bit more fitted than this. Any ideas gratefully received!
It’s the Kala dress, the dark Chalkboard dress and the cotton voile asymmetric midi dress in navy.