One of the most important aspects of any body building program is to see to it that your body building work outs are ably supported by a nutrient-rich and balanced diet that can help accelerate your body building dreams, than to be on a random nutrient-poor diet that can diminish all body building possibilities whatsoever.
How healthy is the food that you eat pre and post your body building work outs each day, is exactly what determines how well your muscles will recover, repair and grow from the wear and tear of each day's body building work outs at the gym.
Whether you are a vegetarian body builder or a non-vegetarian body builder, nutrition is important for one and all, and it is all the more important for vegetarian body builders in particular.
  You could be the proud owner of a truly impressive physique, while you are still on a strict vegetarian diet, but discipline is of utmost importance, to ensure maximum natural production of the desired levels of testosterone and insulin that will help with recovery and muscle building.
  Not only is it just important that you do the optimal work outs to ensure the most efficient and effective results in body building, but you should follow a diet that will help you maximize yourself in terms of body building, even during all that time when your are not physically training your body in the gym.
As a vegetarian, you may not be able to have meat, whey proteins or any of the other animal products that help with easy testosterone production and absorption.
You may be a vegetarian for a variety of reasons, including your personal values, or that you do not want to be selfish enough to kill another for your personal purposed, which in no way means that you look down upon those who are non-vegetarians, but it may be just that you can hold and control yourself against eating another moving animal, or you just don't feel like it, so you are whatever you are.
Most commercial supermarkets in the United States today, host sections with organic fruits and vegetables, and every vegetarian or non-vegetarian take advantage of these sections, to derive maximum nutrition, from these whole fruits and vegetables, that are rich in antioxidants, complex carbohydrates, proteins, vitamins, minerals, and some even in natural fats.
  Many professional body builders prefer to use Soy proteins as their staple source of proteins to support and help them bring results through their body building work outs.
Although Soy has been under the scanner for its impact on the estrogen levels of males, it has been eventually clinically proven that consumption of Soy proteins is completely safe for males.
Other excellent protein alternatives for vegetarians include rice proteins and hemp proteins.
In fact all those vegetarians, who find Soy proteins precarious in terms of their effect on estrogen levels, you can completely replace the same by hemp proteins in your diet.
This way you could be a vegetarian body builder, following the same rules of a healthy diet as any non-vegetarian body builder.
You could get your source of rich vegetarian proteins from the protein sources discussed above that are non-meat.
Non-dairy, and do not contain any animal products or even animal byproducts for that matter.