Jesse James and Hildie KatibahSandra Bullock was allegedly spotted with philandering ex Jesse James in California on Monday. RadarOnline.com's photo of the encounter features James walking into his West Coast Choppers office in Long Beach, a long-haired brunette beside him, no faces visible.

Then TMZ questioned the photo, identifying the mystery woman as Hildie Katibah, who is not Sandra Bullock, but is the head of Pay Up Sucker Productions, which is affiliated with Jesse's bike business.

Now PopEater has confirmed with Bullock's rep that the woman in question is indeed not Sandra.

"It is not her," Bullock's spokeswoman, Cheryl Maisel, tells us. "Sandra had already left town after the Teen Choice Awards."

West Coast Choppers sources tell TMZ that Sandra has not visited the shop in "a long while" and "definitely wasn't there on Monday." See the mystery woman after the jump, and decide if it was an honest mistake or a wild error.