Katie Holmes has a whole new attitude since filing for divorce from Tom Cruise, according to multiple employees of her local Whole Foods supermarket in New York City, where's she's regularly shopped for the past year.

"In the last few weeks she was, well, not very nice when she came in," one employee said. "But now, she actually smiles and even let customers take pics of her and Suri."

"It's like a weight has lifted," said another. "Now she seems normal -- well, almost normal."

Two or three weeks ago, employees said Katie, shopping alone, got into an angry altercation with one of the cashiers.

"Something happened, I don't know if it was because her credit card didn't swipe or get or approved or some problem like that, but she starts yelling at our cashier 'A**hole! A**hole jerk! I'm never coming back here again'," one staffer said.

That cashier hasn't been seen since, and employees believe Katie may have got him fired or transferred to another store.