I'm going to go ahead and throw this out there:
Realistically speaking, to a certain extent in nearly any professional dance company, people are chosen according to their body, whether we're talking about ballet or modern, hip, hop or jazz. Truly, the last place I saw that didn't do that was the Bill T. Jones/Arnie Zane company.
Some companies might not mind having dancers who are sticks, or big-boned, or short or tall, but for 99% of the professional companies out there, those who choose and cast dancers will have some aesthetic or criteria in mind.
I haven't seen your company, Bob, but I think one has to be very careful about saying as a blanket statement, "Where I come from, people get cast because of their skill, not their body."
Can you honestly say that people are not cast because of their body? Would they have cast Larry Golhuber, the Bill T. Jones dancer who was 400 pounds (and a fabulous mover, btw)?
I fully agree with Matthew that thinness has nothing to do with being a great dancer and with Pearl, that you should be proud of your skill more than anything else.
Here's a quote from Jones that I love:
I want my dance to be bigger and more generous and you know what? When people say to me at cocktail parties, "Oh, I have two left feet, I'm too fat, I'm too old," I'm saddened by that. Dancing is like your voice...It's a gift to you. Everyone can do it. I danced with a woman with no arms and legs three years ago in Vienna. What was that dance? It was sexy, it was real. And if dancing is a symbol of what it means to be alive, I dare you to dance bravely. I dare you to be fierce, and I dare you to be outrageous and generous.