29 and my body hasn’t changed?

Obviously, I’ve noticed things aren’t as firm as they were in my mid-early 20’s and things require more effort which is fine. I’m naturally petite and rectangle shaped so wondering when I’m gunna get this ‘second puberty’ everyone talks about?

My hips are not broader, my boobs haven’t grown, my body hasn’t become more womanly.. if anything I’ve become leaner and maintaining a healthy bodyweight has become harder for me. I’m wondering if this is the case for other women too? I’m 30 next year and sit at around 56kg and 5’2.

People love to harp on about how women like me are the beauty standard but actually maintaining any semblance of femininity with a body like mine has been one of the biggest challenges of my life. I should probably mention that I have no intention of ever having kids, never wanted them and likely never will want them enough to commit to having them. Therefore my body is unlikely to change in an extreme way unless the circumstances in my life change (illness, mental health ect)

So.. when am I gunna get the natural BBL I was promised? Am I destined to live the life of a malnourished Victorian peasant child?