This time, the writing's on the car.
The actress had stopped by a studio early in the afternoon and upon approaching her car, saw the awkward memo sent from an anonymous prankster.
The words, "I [heart] Rob" were written on the hood of the star's slightly dusty car.
Stewart, who donned her usual uniform of a plain white T-shirt and baseball cap, appeared unfazed by the incident and drove off without altering the writing.
It's been almost two months now since she and Pattinson ended their more than three-year relationship.
Back in May, a source told E! News that K.Stew was "heartbroken" and "so sad" over the breakup.
Since the two parted ways, both have been keeping as busy as possible in their careers and personal lives.
A source told E! News exclusively that the brunette beauty "came in with a group of five people, all on their way to the airport, and they stopped in to get a quick tattoo."
Kristen was "supersweet, real shy. Didn't want anybody to know who she was," the insider added.
She's also been prepping for her latest role in the upcoming flick Camp X-Ray in Los Angeles.
The 23-year-old just got back to sunny California after a few days in Paris for Couture Fashion Week.
She stunned in a revealing black lace jumpsuit at the Zuhair Murad fashion show last week and made sure to inject a bit of her own personal style with a grungy side hairdo.
That was only one of Stewart's appearances at fashion week, however. She struck a pose and stole the show at the Chanel presentation last Tuesday, which marked her first public appearance since the split with Pattinson.