I know from personal experience (photos of DS as a toddler posted online, on Facebook, in a shop window and in an advert in a newspaper)
That unless you expressly withdraw consent at the time the picture is taken or stop the pictures being taken all together, there is no way to control how the picture is used.
I took the photographer and the person spreading the photo of DS around to the small claims court to try and get them to stop using the photos but they refused and I lost the case as they own the photographs and can do what they like with them. .
The picture of DS were taken at a private party, I had no idea there would be a photographer (if I did I would have made it clear I did not want Ny photos taken of him)
Basically no matter what or who the image is of (unless its an illegal content obviously) a photograph is the sole property of the person who took the picture, and they are free to do whatever they like with the pictures.
Sorry OP but you are massively over reacting,
As it was pointed out to me, unless you shield your DC from the world in a hood and mask (Michael Jackson style) your DC will be seen by hundreds of strangers every day in public, a picture floating around online or being displayed somewhere really isn't going to make a lot of difference to your DC or anyone else.
But I'm sure if you speak to the bride she will take down the photos, or at least set them to private.