Maybe you just didn't know when it started growing but you should really just ask a doctor.
By getting pregnant.
Get pregnant. Then your breasts will increase.
Get implants.
Breast size is determined by body fat, hormones, and DNA. To increase the size of the breast you can gain weight or have surgery. Otherwise, no cream, drink, food, pill, or exercise will increase the size of a breast. A good bra can help shape and firm it, though.
breast augmentation
Sure, in your dreams. Nothing will increase the size of your breasts. Except breast implants.
Eat chicken
None
No.
It way or way not work. There is no scientific evidence that any breasts creams increase breast size.
Vitamins do not increase breast size.
if you pump enough that the breast undergoes the transformation required for milk production, then it is of course possible for a breast pump to increase breast size.