Does papaya have estrogen to increase breast size?

No: Unfortunately there is no food or medication, either prescribed or natural that can increase your breast size safely. They will likely increase with pregnancy and breastfeeding, but surgical breast augmentation is the only safe way to enhance your breast volume.

Papaya and breasts: To the best of my knowledge and without doing an on-line search, consumption of papayas will not increase your breast size over what you genetically were destined to get. Otherwise all the women in tropical environments would be consuming papayas all the time time. And having grown up in hawaii, i can't say papayas helped much. But they do taste good!