[QUOTE=fire_911medic;7307124]
Unfortunately some of us were blessed with ghetto booties (j lo butts) and despite being fairly fit still struggle with the fact we don’t fit the saddles well. It truly sucks. I ride in an 18 with a flatter seat which is not what I would like but what fits me and the horse well. I’d love to reduce my bum. Before you say anything I am 5’6 and weigh about 145 regularly run 5k races so I am far from a couch potato. I just have a bum. Any suggestions that actually work ? I’ve tried wall sits and leg lifts and your traditional stuff worked great for my legs not so great for my bum.[/QUOTE]
As you (hopefully) know, you cannot spot-reduce body parts. Just can’t
If your liberal bum is as large as it is due to excess fat, then you’re going to have to go on a fat-busting diet/exercise routine. Wall sits and leg lifts are not spot-reducing your legs, they are toning, and a toned leg can look smaller than a flabby one. If by chance your legs did shrink in circumference, then it was about your exercise/dieting at the time causing a calorie deficit, and you happen to lower fat more/faster in your legs than in your bum. While you can’t spot-reduce, most people do have an area of the body that stores fat first and loses it last. That just means you have more work to do for longer to start getting that fat burned out.
Soooo, assuming you have an overall body fat % that is too high, it comes down to 80% how you eat and 20% how you exercise. You need at least 1, maybe 2, HIIT workouts a week, and then lift weights. If your lower body tends to put on muscle mass quickly and easily, then don’t do heavy leg workouts - do lighter (but not light!) weights with more reps. But go heave with your upper body. 1lb of muscles takes up a lot less volume than 1lb of fat, and 1lb of muscles requires a lot more calories to maintain than 1lb of fat. That is why weight lifting - as heavy as you can/dare - is the best thing for losing weight (when it comes to types of exercise), as it increases your metabolism over the whole entire day, day after day, to maintain the muscle tissue. That, and eating “clean” food, and consuming fewer calories than you expend, leads to healthy weight and healthy weight loss.
You might never have a tiny booty, but you should be able to reduce its size, even if it takes a while.
You cannot compare sizing of that type of saddle to an English CC or even Dressage saddle. That is not remotely a 16" CC saddle, and VERY certainly not a 16" Dressage saddle. I would buy that it’s equivalent to a 16" Western saddle, which would be more like an 18" CC/Dressage saddle. And yes, it’s too small for you 
OP - I’m so happy to hear how you handled the situation, AND that she seems to be taking the issue seriously
