If I iterate through a selector, what order of elements do I get?

If I iterate through a selector, what order of elements do I get?

Suppose I dynamically add three images, one after the other, to my document.  They all have the same class, so I can use a jQuery selector for the class to retrieve them all.  The third image has a position on the page near the top.  They are all within a DIV. 

I would like to retrieve them in order that the appear to the human eye. 

But a class selector would retrieve them in the order that they were added, so the image nearest the top of the page is retrieved last.

I suppose I could sort the images by position after I retrieve them, but that is complicated.

If I used a selector for the DIV that contains them all, would that help?  maybe something like:
$( "div" ).children()?

Thanks.