You could call this beautiful image of Ellie "fan art", but that would be a weird definition, since the artist actually worked on The Last Of Us.
That artist was the exceptionally-talented Marek Okon, whose work we've featured here a few times before.
While unrelated to any actual TLoU work going on at Naughty Dog, Okon imagined his own take on a continuation of Joel and Ellie's story, in which Ellie is "being chased by a woman who will hesitate at nothing to find the cure and save her loved ones."
Then he drew this. It's wallpaper-sized, so just click "expand" and you can see it at 1920x1080.
Marek Okon [Facebook]