This is such a lovely photo of Madeline Cornelius celebrating her First Communion.
Traditions of celebration surrounding First Communion usually include large family gatherings and parties to celebrate the event. The first communicant wears special clothing. The clothing is often white to symbolize purity, but not in all cultures. Girls often wear fancy dresses and a veil attached to a wreath of flowers or hair ornament. In other communities, girls commonly wear dresses passed down to them from sisters or mothers, or even simply their school uniforms plus the veil and/or wreath. Boys may wear a suit, or tuxedo, or their Sunday best, or national dress.
Note: There are no other markings on this photo.