Ooh I love Gabor! My one remaining pair of high heels are a lovely pair of Gabor. I do like those first ones in the rose colour, thank you!
I like the espadrilles posted, but the heel is a bit high for me.
Tights would just be nude ones, to disguise my battered legs. Builders Tea from Snag are my go-to.
I would probably wear it with a petticoat for a bit of a 50s feel. The photos don't do it justice, I don't think. It has a fitted bodice, nips in at the waist, and a very full skirt with a lot of fabric. It's a twirling dress! Fat face sizes are very generous - I got it in a size 10 when often I am a 12-14.
I know it's a sun dress but... pretty makeup, hair curled and worn half up half with a bow... cute pair of heels, some jewellery. Maybe a wide white belt around waist. I have a small handbag that would go... I can't personally see why it can't be dressed up!