Think about it this way. Thousands of pictures are taken in one shoot. VS handpicks the pictures they want to be released. Within those thousands of pictures, you don't think there are pictures of Taylor smiling, or having a good time? Highly unlikely. Photographers also have say so in how a picture looks. Perhaps, maybe.... both VS and the photographers want a more serious pic from her. The same thing happened with Miranda and Candice for a couple of years where you would get the occasional "happy" picture, but for the most part, it was "sexy, or sultry" aka serious mode.
Taylor is extremely introverted, but there are hundreds of pictures of her smiling in VS, red carpet, photo shoots, social media, and pap shots... yet no one seems to pay attention to them so her "serious" face is doing something right... it's making people talk about her just a little more. This isn't the first or last time we'll hear about Taylor looking unhappy, or serious. LuL I also tend to dislike her "happy" shots, so continue doing what you doing Tay.
Also some people just aren't smiley people, doesn't mean they're going to neck themselves at any given moment. I happen to be the same way... I think the last time I smiled for pictures was my wedding (and even that there are only 2 pictures out of dozens upon dozens). I mean I smile here and there (like when I'm laughing), but I'm in no way shape or form sad, or miserable.
Another anti smiley person - Stella ❤️