I really like to photograph/ photoshop in my spare time... And coincidentally, a lot of it has been manipulating myself to see what I would look like as a female (whether if I was born naturally a girl, had to have ffs from my current state, etc). I saw this thread and thought that I would pop in two pics I have manipulated to make myself female *I removed the backgrounds for identity purposes. But, I think you get the idea:
This is what I think I would look like around age 16-17, and I added a bikini:

And this one would be around what I would look like age 13-14:

Obviously, these have been photoshopped really heavily!! But, hopefully this would provide some 'stealth' cover if I ever did so...

I think the two pics look a little bit like different people, but that is just because I used different styles for the editing