Granted I'm not a size 4 or even a 6. I'm sure plenty of people would look at me and think I'm a little too large for my profession. I notice the surprised looks when I tell people that I'm a personal trainer.
Ok, I get it. Most people expect a female personal trainer to look like a fitness pageant contestant or body builder, and I certainly don't fit into either of those categories.
I have not been a gym bunny all my life. Heck I'm not even a gym bunny now. I don't workout hours a day. I'm just not that vain. And frankly that is part of what makes me so good at my job. I can relate to the average person who is trying to get in shape and lose weight.
I used to look like this:

In that picture (age 31,and yes, that really is me) I weighed 291 lbs. In Texas the proper term is "big as the side of the house".
So I think I look a great deal better now. And no, I don't plan on losing more weight...not much is going to change on my body until I have it surgically altered with a tummy tuck, or a body lift (same thing as a tummy tuck, though more skin is removed).
True, most people do a double take when I tell them what I do for a living and so many have suggested that I just do more abdominal exercise. I know they mean well but they are just uneducated. You cannot exercise away skin. And I guarantee my abs are way better than yours! Wanna see my 2-pack?
I try not to be offended when people ask me if I plan on losing more weight. I know they aren't intentionally trying to be rude...though it makes me wonder how bad I look for them to ask that question.
Regardless, I love what I do and I am very good at it.. I help people every day and that's what matters to me.