What is photo retouching and when is it permitted?

.ON MARCH 10th Kensington Palace released a photo of Catherine, Princess of Wales commemorating Mama’s Day along with her three kids. By the upcoming day, after finding that it had been modified, 5 image agencies had drawn the picture coming from their cords. Princess Charlotte’s hair, sleeve as well as dress seemed to be to have actually been played with.

The Little princess of Wales apologised for the changes, which she mentions she created herself, characterising all of them as the practice of an amateur freelance photographer. There is no tip that they were planned to trick the public.