It's not an informal family shot.
It was the first image released by Kensington Palace since Kate's recovery and marking Mother's Day.
Kensington Palace knew full well the image would be used around the world.
The PA said the image was a handout image provided to them by KP.
Getty said the image was provided to them by KP.
The AFP said they were issued a handout image by KP.
KP knowingly sent an image that is a lie to media agencies to disseminate.
You need to get an understanding of media agency principles work, and fast.