To “pin” one’s self with an outward show of a personal accomplishment and adoration; see “ornament”
As with all other jewelry, it refers to vanity or cultivation in life. You want recognition, to amount to something, or to receive a gift.
To dream that you are wearing jewellery depends upon the surroundings for its importance.
If you are at home, it is a fortunate omen, but if you wear it at a strange house, then expect trouble.