You can easily control the length via adding "long dress" or equivalents to the prompt.

My PONY Clothing Catalogue

Since all these SD3 shenanigans don't seem to find a satisfying end, and people asked for some Pony Loras. Let's give it a try!

As always, keep in mind: I'll try to use the absolute most basic prompt in my samples, so you can see the baseline that's possible (and I absolutely suck at prompting).

Tell me what you think and have fun!