[Ennui.]

Hey,

This is concerning to me, especially because you said that the pictures are starting to feel more sexual. Having nude photos of a minor can be considered child pornography and your aunt or other family members can get into serious trouble for taking photos like this or having them in their possession. I'd tell your aunt straight out that you don't feel comfortable taking photos in the nude anymore because it is uncomfortable and illegal. If you don't want to tell her yourself you can have a parent tell your aunt that you no longer want these photos taken. A 14 year old shouldn't be taking sexy pictures, especially for another adult.

I'd insist on being fully clothed if your photo is being taken going forward. That way there's no legal risk going forward and you don't have to feel weird, childish, or uncomfortable. You have the right to say no, so if anything you do is ever uncomfortable you don't have to force yourself to do it to please other people. I strongly encourage either you or a parent to talk to your aunt about this and put an end to this tradition. If things continue (or even now) you can report it to the police.