A helpful fuck-ton of boob references.
Note that since this contains long images that are currently fuzzy (because tumblr just doesn’t want to display ‘em clearly), you gotta reverse-image search ‘em in google. Just because it’s a little extra work doesn’t mean you oughtn’t do it; the large image on the right is totally worth the effort for female anatomy, and the one of the left is also helpful with bra things. They’re all quite helpful.
[From various sources]
edit added face