I Always ride in stretchy jeans... otherwise I can't get on my horse! Especially if it is hot and sweaty! I think if you are comfortable in breeches, then you should ride in them unless you are showing tho... who is going to complain?
Jeans - shorts, capris, full length, whatever. Just depends on the temperature. Lol.
I have worn breeches to ride western, but I felt silly. Possibly because I was riding in public; I wouldn't so much if I was just at the barn and there was no on else. I am planning on buying a pair of carhartts for this winter, though. :)
I don't ride in any certain brand. Although my favourite pair of jeans is Volcom brand. I buy most of my jeans at the Goodwill since they're just going to get worn out at the barn. My nicer jeans I buy at another second-hand store, but it's for brand name clothes only. I'm definitely not the type to shell out even $20 on a pair of jeans.
I wear breeches to ride western! It's so hot and sticky here during the summer and part of the winter that it's almost impossible to peel off sweaty jeans and still retain some dignity! The breeches are so light and cool, I don't care if I look a little weird.
First I like my jeans: my favorite jeans for riding are those that are one size too large and stretchy, Lees are one name that comes to mind. I like form fitting but I want something that's got a lot of give and are light.
Then I have a pair of stretch khakis and I like them because a) they're one size too large and b) because they're really light and the truth is I sweat like I'm melting in the summer, especially when I'm in a stall tacking. UGH. Embarrassing. So the lighter the better.
I have a couple of pairs of jods that are heavier and I'll wear them if I need a clean pair of pants and they feel right that day. I'm not crazy about jods because they fit weirdly to me...too clingy on the thighs. That bugs me. BUt I'll get my money's worth from them, for sure.
I don't really care about "fashion" per se - I ride western but I'll wear an English helmet, half chaps and jods if that's what I decide I feel like wearing. I wear what's comfortable and practical. I don't compete don't plan to compete and don't think it's going to be an issue, thank heaven because those outfits can cost!
I like my half chaps even though they're pretty warm and cotton stretch button front 3/4 sleeved blouses with the sleeves rolled up. I don't like tees in summer because I sweat and then they cling. I like to keep it loose and as airy as I can.
In the winter, I dress the same, only a little heavier. Last year I didn't get to ride during the coldest months but I have a feeling I'm going to be wearing layers that can be stripped off.
I ride in Wrangler Q-Baby's, a t-shirt, and Ariat Fat Baby boots. I had a pair of Justin boots for less than a year and the inner lining at the back of the heel tore and would catch my foot so I couldn't get my foot out! I definitely shoot for quality with my riding gear because it gets used so hard that it wears out quickly if it's not quality.
Jeans in the fall/spring
Light wash holey jeans or lightweight light colored boot cut breeches in the summer (or shorts, I admit it...)
Fleecy, Insulated boot cut breeches in the winter... Toasty warm!