I’m 53 and hiked the JMT solo two summers ago. I brought
1 super light wind pants
1 tank top to wear in camp and to sleep in
2 pr underwear (1 worn)
1 bra
1 long sleeve poly shirt for hiking
4 pr short nylon socks (2 worn)
1 light wind shirt
1 primaloft jacket (16 oz)
1 pr shorts (worn)
Long underwear tops and bottoms-light weight
Vasque trail hikers
Teva water sandles for water crossings and in camp
light gaiters to keep the crud out of my shoes
Head net and cheap baseball cap
Silnylon poncho (homemade)
fleece hat (homemade)
fleece mittens (homemade)
That’s it for clothes. For other stuff I carried all of it in an Ospry pack. One of their women’s models (I don’t remember exactly which one)and it weighed in at about 3# and a bit. My shelter was a one person Henry Shire tarptent. Great shelter! I had a 30 degree down bag that weighed in at 1# 8oz I believe. A 3/4 length Mt. Washington sleeping pad. For cooking a homemade alcohol stove with one Ti pot and a lexan spoon. Aqua Mira for water treatment and soda bottles for storage.
Oh, and a very heavy bear canister. My base weight was 12 pounds without food and water.
The only major change I have made to this list is to buy a ULA P-1, which I am very happy with and it weighs in at just under 2# with all my extras.
I know this was long winded but I wanted to encourage you all to go for it. The trip was a life time experience for me. In fact, I’m going again this summer!
Good luck!