[nanakante]

One way to gain weight and potentially increase breast fat is to consume a higher number of calories than your body burns each day. This can be achieved by increasing your intake of calorie-dense foods such as nuts, cheese, avocados, and healthy fats like olive oil or coconut oil. However, it is important to maintain a balanced and nutritious diet and not solely rely on unhealthy, high-calorie foods. 

In addition to a healthy diet, engaging in strength training exercises can help to build muscle and potentially increase breast size. This can be achieved through exercises such as push-ups, chest presses, and chest flies, which target the muscles underneath the breasts.