Have ye beheld (with much delight)
A red rose peeping through a white?
Or else a cherry (double graced)
Within a lily? Centre placed?
Or ever marked the pretty beam
A strawberry shows half drowned in cream?
Or seen rich rubies blushing through
A pure smooth pearl, and orient too?
So like to this, nay all the rest,
Is each neat niplet of her breast.

Robert Herrick

http://www.poemhunter.com/poem/upon-the-nipples-of-julia-s-breast/