Cohn admitted that in one aspect she was similar to her Facts of Life character Natalie – when dressing up, "Anything that takes more than 20 minutes? No can do," she said.
It seems old habits die hard. Even after host Stacy London warned her on the show, "Mindy, the paparazzi is going to photograph you," Cohn, 44, was snapped in a blowsy top, wide scarf and harem pants coming out of a Los Angeles Lakers game this week.
"Oh dear," London tells PEOPLE upon seeing the fate of her former charge. "Well, you can't win 'em all. That's the facts of life!"
Co-host Clinton Kelly adds, "Wow. We've always known that some people revert to their wicked old ways after leaving What Not to Wear, but I think this one may be a first – she's actually worse than when we first got our hands on her."
"Maybe she lost her full-length mirror," London wondered.
A rep for Cohn had no comment.
What Not to Wear airs on TLC on Tuesdays at 9 p.m. ET/PT.