Yes, sun shining through clothes and windows is often quite amazing.
Last fall I was at the symphony, afternoon concert, and this college-age gal was walking with her assumed bf and dad from the hall back to the parking garage.
I remember having to walk around a busker and when she turned to go around him first, the sunlight came through her dress and I could make out her breast and nipple perfectly (braless, of course). It wasn't totally see-through, but perfectly highlighted. I remember that it was one of the more oddly shaped breasts I had ever seen, almost like a long chicken finger (the food), then a very dark nipple sticking out of it.
My wife hardly ever goes braless during this past entire decade
but she does wear very thin t shirts with only a bra under it most of the time. The sun highlights her bras, their patterns, their seams, etc, every day. She doesn't care, but she gets upset if her brastrap shows on her shoulder. Huh.