Feet slipping in stirrups
Recently, I've been having a lot of issues keeping my feet in the stirrups. No matter what I do, the outside bar just slides off and my foot pops right out. It happens at the walk, trot (sitting and posting,) and canter (full or half seat.) I've tried two point- it does nothing. I've tried sinking my heels deeper, popping my heels up a bit, putting my weight towards the inside bar and the outside bar, angled my stirrup before riding, etc. Nothing I've tried seems to work, and it's getting very frustrating... I originally was thinking it was my boots (they're like 5 years old and have no tread left) but it happens in my less-worn tall boots too. I tried different stirrups as well, including super grippy ones. It's also not my horse; At my last IEA show as well as in lessons the same thing happens. The second there's any weight in my feet, they start sliding. So basically I've eliminated stirrups and movement of the horse, which means it must be something I'm doing.
I've always had a super solid leg, so I'm not quite sure how to fix this. It seems to have just started like a month ago, for no real reason that I can think of. If you have any advice on what to do to work on this, I'd really appreciate it. I don't think I'm doing anything differently than I usually do, but the stirrup just slides like crazy and my feet come out after a few laps around the ring...
Thanks in advance!
Worth The Wait <3