Will Smith cheating on Jada Pinkett Smith with Margot Robbie, divorce looming? Sexy 'photo booth' snapshots go viral, actor fooling around with bra-flashing 23-year-old 'Focus' co-star?

Apparently, 45-year-old actor Will Smith had a little too much fun with 23-year-old "Focus" co-star Margot Robbie at a New Orleans' cast party back in October. The two were spotted "flirting" in a photo booth, with Robbie even exposing her lacy bra at one point. Wonder what wife Jada Pinkett Smith must think?

Here's the recent cover issue of Star magazine:

"Will & Jada: the photos that will tear them apart! Will cheats with sexy 23-year-old in New Orleans. Next: the $220 million divorce battle."

Those photos ARE pretty incriminating... as the Daily Mail explains:

In the pictures, the Australian actress lifts up her top to reveal her lacy white bra, as Will does the same behind her, pressing his bare chest against her back. She looks up at the actor and suggestively pouts her lips. In another shot, he pulls her towards him from behind, their face pressed close together side-by-side.

An alleged insider for the popular gossip rag explains, "He wasn't acting like a married man; he gave no signs that he was in a committed relationship... What kind of married man would go into a photo booth with a sexy 23-year-old girl and start to undress?"

Apparently, Robbie was the first one to make moves on Jada's hubby by pulling him into the photo booth:

"Once they pulled the curtain back to take the pictures, they let their inhibitions run wild, laughing, hugging and nuzzling each other in the dark," the eyewitness continues. "Margot directed Will before each pose. First she ordered him to act like a gangster. Then she covered her face with a masquerade mask and leaned into his chest. Next, she asked Will to take a sexy picture with her, as she pulled up her shirt and exposed her lingerie for Will and the camera. They were hanging all over each other, laughing like they were a new couple in love. Will had just gotten done working for the day, so he definitely wasn't intoxicated in any way - he knew what he was doing."

Afterwards, the two left the party together with Robbie riding Smith "piggyback style." They were allegedly gone for the rest of the night. Smith's assistant apparently "confiscated" the rest of the photo booth snapshots.

FYI - the young Australian beauty stars alongside Smith in the 2014 romantic comedy-drama "Focus."

However, another source for E! News insists that there was NO hanky-panky going on between Robbie and her much-older co-star. The insider reveals, "These pictures were commissioned by production... The entire cast and crew saw them taken. The photo booth was on set all day for a bit of fun. It wasn't even a party - they were taken during the day and everyone knew about them. It was the last day of shooting."

Jada did not attend the bash.

Although Will and Jada Smith are still together, rumors suggest their marriage is currently on the rocks. The couple hasn't been photographed together with their children since August.