Congratulations, that's an amazing achievement!
I've not lost as much, but having shed 5 stone one of the hardest things for me was to rethink the clothes I could now wear. For years I'd hidden in baggy clothes in dark colours. Basically if it fitted, it would do. If I found a top or trousers that fitted, I'd buy several and wear the same every day. I had three or four safe shops, and 90% of my wardrobe came from them.
When I first lost the weight, I starting buying the same clothes I always did, just in smaller sizes. So I just looked like a smaller version of frumpy and hiding. It took a while for my confidence to catch up. I'm now looking at different styles, trying different shops and wearing colours I haven't worn for years.
Could you reward yourself with a session with a personal shopper? They can advise on what works for your new shape and suggest things you wouldn't necessarily pick out for yourself, particularly if you've felt constrained to particular styles for a long time. Or would your daughter be up for a day shopping? My daughter has been great at persuading me to try things I wouldn't have looked at, and she is invariably right. From your photos, you don't need to confine yourself to the styles you used to, for example you have a great waist, and can really show that off.
Have you had a recent bra fitting? My size changed completely, and now I've got bras that fit, clothes fit so much better, and hang properly.
You mention your age. I am a similar age, and I have become open to shopping in places I never used to, and it's great. For example, the best fitting bras I own are from Victoria's Secret, after years of Marks and Spencer. It's also fun ditching granny pants for something a bit less conservative - good for confidence too!