I am 26 years old and my breast is very small. Is there is any exercise or type of food that may make it to grow or get bigger?

Unfortunately, there isn't much you can do in terms of exercise or diet to make your breasts grow. You could gain weight, but note that the rest of your body will also show the weight gain so you probably don't want to do that. The only effective method of increasing breast size is breast augmentation surgery.

You are at the age where women have completed their breast development. Your breasts will no longer grow in size unless you gain weight.  Some of your alternatives include doing nothing and accepting your beauty just the way it is; having breast augmentation with implants; wearing padded bras or inserts in your bra. Until you decide- add some shirts with ruffles, print, and defined waist line- this helps give the illusion of bigger breast. Best of luck.

Hello and thanks for your post. Breasts grow and develop until about age 21-22. After that, the most effective way to make a breast cup size grown is through the use of breast implants. Best wishes, Dr. ALDO.