I've known lots of attractive people in my time.
Out of my friends at college and uni, I had one absolutely stunning friend, most of my friends were attractive, but she was headturningly beautiful, tall, dark hair, just an amazing face, and when we used to go out, everyone would stare at her (or hit on her) and I'd be her sidekick, whereas usually I would get some attention in my own right! It was a lot of fun, though and she's a great person, I'm still friends with her 35 years later although that breathtaking beauty did go by about her mid-twenties, now she looks like a lovely looking middle-aged lady and so more similar to all my friends.
Out of current friends, I have one very good looking friend, partly very slim, partly great face, very vivacious and again, people look at her, she's over 50.
In terms of being naturally radiant, both my mum and gran were like that, both nice looking but just very calm, good listeners, everyone wants to be around them, and they make enduring and great friends as a result. They kind of glow a bit and they are my role models for when I'm feeling a bit cross about the wrinkles!