Let's clear up a few misconceptions.
You don't "lose" your looks. You get older. Your face deepens and wrinkles, reveals character. It's finessing a point, but the phrase itself implies that 1) there is only beauty in youth and 2) that looks are a commodity, which as women, we should at least make the conscious effort to disavow, if only because it's a social conditioning we are not always conscious of. The most charismatic women I know are less than perfect looking. Cultivating something else is an art, but I've been practicing that since my twenties, and so I think ageing has been a gentle transition for me.
I'm 50, btw. Beautiful? I've been called that and I've modeled and done local TV commercials. I have been quite lovely in some photographs but not able to really estimate my own looks fully (I have certainly never felt equivalent to the attention I sometimes received). I got a lot of attention when I was younger, not all of that good. I feel now that I have more ability to be anonymous, which I don't at all mind, and sometimes really do appreciate. I still feel beautiful, even while my body has definitely changed. So has my mind. So has my heart. I'm more accepting, more apt to empathize with others, more striving towards a spiritual realm. Those attibutes help.
What I do really appreciate is the peace and flow I have with who I am and how I look. That was not so present in my twenties. Fact: You will look back at your twenties with wry irony at how beautiful you truly were, and marvel over how you just never saw it. You will laugh at some of the things you remember about how bad you felt and how cute you really were. If I could relate one thing to my 20 year old self it would be to enjoy myself more and fret less. God, I used to wash my hair all over again if it didn't turn out "just so". I canceled plans if my outfit wasn't perfect. Hilarious.
I have always thought that older women were inherently beautiful and mysterious and never really feared aging. Natalie Wood, Elizabeth Taylor, Jane Fonda just looked more interesting as older women. I strive for that in my own life as well. As an aside, watch "Peace, Love and Understanding" with Jane Fonda (currently on Netflix) if you want to watch aging (both in Fonda and her character) done perfectly. Being unabashedly, wholly and enthusaistically true to yourself is a depth of beauty all its own.
Someone wrote that "good looks confer countless advantages." They also confer a lot of negativity, at least in my experience. Women who think you are out to steal their boyfriend, men who assume you're a slut/tease/bitch, employers who only hire you so that they can hit on you, endless obvious overt sexual innuendo. I wouldn't at all say it's always an advantage.
Don't get me wrong, there are days when I look in the mirror and don't recognize myself. I have to consciously take over the initial urge to balk at my own reflection to remember that life is way too short for feeling bad about what is a natural process. Sometimes I have to remind myself of the friends I've lost who didn't get the chance to age. Sometimes you just have to breathe deep and dance barefoot and just be so, so thankful that your alive, and that there is so much more to all of us than, yes, meets the eye.