Spokeswoman Carly Zipp said: ‘We think the poster in the Maxwell picture was photoshopped in.

We checked… and we have no evidence or record of Good Boys ever being there.’

Meanwhile, the ‘regular’ diner who took the pictures appears to have done so with a sophisticated camera and long lens offering greater depth of focus than any smartphone.

Others question why Ms Maxwell, who appears to have restyled her hair between snaps, spent long enough at the burger bar for the customers behind her to change twice, yet her food remains untouched and she never puts a straw in either drink.