There are estrogen creams meant to be absorbed through the skin, but it won't matter where you apply them. It goes into the bloodstream to be distributed all over. Also, estrogen in any form is hard to get without a prescription. Dangerous to use without medical oversight, blood testing. Bear in mind that estrogen will do other things to you, such as lower sex drive, and your moobs will become actual breasts with tender mammary tissue growing behind the nipples. Even if you lost the weight, the breasts would remain.
13 years