The pictures, published in the latest issue of Star magazine, show the two actors lifting up their shirts and engaging in other awkward poses inside a tiny photo booth, but according to an insider, there's nothing going on between the two.
"That was a photo booth on set that the producers got for everyone," the source told Us Weekly. "It was the last day of filming and everyone was taking pictures. They were just goofing around. Will is just like that. There's nothing more to it."
An insider for Star magazine said the co-stars were "'laughing, hugging and muzzling each other in the dark” booth.
Neither Smith, 45, or Robbie, 23, have commented on the rumors.