XAML WrapPanel inside TreeView

I have a TreeView displaying items through a Hierarchical Data Template. Now I want to display two properties of an object in the TreeView, as in:
Object1 Name                 Object1 Src
  Object2 Name               Object2 Src
    Object3 Name             Object3 Src

How can I format the output, so that the Src is always aligned on the right side of the TreeViewItem?

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