At the recent American Eventing Championships in Texas, a rider had a wardrobe malfunction.
But eventers are "never say die" types, so she simply put the hackamore back on and continued with her course.
Now, it seems, what might have remained a singular oddity has become a trend. At the show this weekend we saw another rider accept the challenge of tacking up while riding. She managed to pull it off (so to speak) rather nicely.