A little of both I guess? I mean I tend to draw the same generic cutesy clothes a lot, and I have my favourite silhouettes which I probably use too often
Most of the time I just wing the designs and draw what I feel like at the time, like with that last post I started out just wanting to draw a pinafore + blouse combo because there was an advert on tv with school uniforms, then I was like frills gotta add frills. And I wanted layers so added a coat, then remembered that I’d wanted to draw this outfit the other day so I incorporated some of that design.
It’s usually a process like that rather than looking for a specific reference, like also the girls in black/yellow for the one on the left I had seen my mum looking through a magazine across the room and spotted some clothes I liked the look of and tried to draw them from memory though I hadn’t seen them that well (when I later looked at the magazine I was way off lmao but I liked what I ended up with more so)
So yeah that’s how it is with random inspirations. I don’t think designs through as much as I should, I want to try to draw different kinds of clothes more!