Gaining weight questions

How can I gain weight? especially to the breasts.

You can't gain weight in your breasts by will.
Its something that grows naturally.
Althugh if you are worried yours are too small , its fine because some men like that. =]

If you want to gain weight because you think you might be too thin, then I suggest eating bigger portions of healthy meals.
You need to make sure you are still eating healthy, because you dont want to consume too many fatty foods or calories.