I’ve had both the pattern and the fabric for ages (the fabric slightly longer than the pattern, an impulse buy). The pattern is Amy Butler’s Cabo Halter.
The only thing that took me so long was fear of the invisible zipper! It did take me a while to figure out how to assemble and attach the invisible zipper foot to my sewing machine, the little packet the foot came in wasn’t big with instructions. Once it clicked though, I was up and running!
I have to admit I quite liked inserting the invisible zipper, even though it’s not perfect and I had to do it a couple of times as I got thread over the zipper teeth, I still preferred it to a regular zip. From now on I may invisible zipper most projects where a zip is required (I don’t love it quite enough to go put a zip in everything)