Yes, when I was a child, teenager and early 20's. Interestingly it's a bit easier for me now as an adult.
But when I was young, it was a nightmare, and I'm sure it was for my mother too when she took me. The lighting bothered me insanely, and the getting in and out of the clothes. I remember having meltdowns and not even knowing why I was feeling so much anxiety and agitation (I wasn't diagnosed until adulthood, so nobody knew why I was the way I was).
Also, in the time and place where I was a child, they used to have communal changing rooms. That was horrifying to me, the lack of privacy, even when I was a kid. It just really upset me.
I found myself growing out of some of the discomforts, particularly when I experienced more cubicle situations and the communal space went the way of the dinosaur -- so, that helped, for one thing.
The lighting doesn't bother me so much but I still get annoyed if there is loud music pumping. I try to stay very calm now, and stay conscious of the fact that I may start to feel flustered in the whole experience. So some techniques I use is to move very slowly and deliberately, both when looking at the clothes on the racks (focus on one thing at a time in order not to get overwhelmed), and when in the cubicle trying on the clothes.
I make myself do slow, deliberate movements physically in everything I'm doing, also in breathing, while taking off and putting on the clothes, and I find that this helps me not get flustered and frustrated and start to get sensory overload.