Also known as: ストリートスナップ
A term in street Fashion to refer to a casual, typically Full Body snapshot taken by a third party of a person's outfit while out and about.
The key word is casual - elaborate poses and artsy photo angles generally don't fall under the category of "street snap".
Street snaps are commonly featured in fashion magazines around the world, as they help showcase what kind of clothing is currently being worn by everyday people.