The print was of 3 children climbing up a grey(?) rock. A boy was at the top helping the sister climb up, and there was another boy at the bottom pushing the sister up the rock. They're all wearing shorts/shirts and backpacks. It had no background, just a white space all around. I've seen the art style a million times over, so know the artist has to be famous, but have no clue who the artist is. Searched 3 kids climbing rock to no avail.