@wintercandyland, you look wonderful in the dress!
No matter a brand's target market, most make a range of items to appeal to as many shoppers as possible.
I worked for seven years in the wedding gown industry and we carried a line called Reem Acra. Reem's gowns were gorgeous and known particularly for their delicate and elaborate beading and embroidery on voluminous satin ball gowns. They were all stunning, but funnily enough, my favorite one was a slim silk crepe gown with sleeves and a deep v-neck with just a beaded/embroidered medallion at the waist. Very 1930s. No one would have looked at it and guessed Reem Acra, but there it was. So, there may be items from brands that aren't typically "your look" or "your age target" can still make something just right for you.
I think that both the color and cut are on the more youthful side and are very appropriate for summer. Will look great with neutral flats or sandals! I'd keep jewelry delicate/minimal.
Isn't it fun to find a dress you love on sale! You look great!