This is probably a weird question,but I was looking through my pictures and I realize I smile with my mouth open in all of them, meaning I show my teeth, looking on Instagram I often see that a lot of girls don't show their teeth, it's like a smirk.
I usually smile with my mouth closed. Just don't feel like showing my teeth. I don't have ugly teeth. I just don't feel like I look good when smiling with my mouth open. Personal taste. But anyone can smile however they want. Their choice.
I have braces and I HATE them so no, I don't show my teeth usually for pics...before I got them on though I did and my friends always ask me why I don't smile in photos because apparently I don't look like I'm actually smiling.