If anyone has ordered these dresses from TU Sainsburys, you might have a shock when you wash them!
I washed at 40 like the label says, I even added a colour catcher sheet to be on the safe side, all my daughters dresses went pink (see photo in comments).
Sainsburys refunded me, I ordered them again thinking they might just be a bad batch. Washed at 40, and added 3x colour catcher sheets, they still went pink.
Just wanted to warn you, then they don’t ruin all your kids uniform, as I know not everyone pre-washes clothes.