This is Simplicity 1586, although when I bought it, it was numbered 0502. It’s one of the Amazing Fit dresses that can be color blocked or solid color with sleeve and neck variations. I made this in View A, which is the short-sleeve dress.
I was able to use some fabric I had left over from a Spring coat I made last year for Easter. The dress is unlined and goes together very easily. The only change I made was I shortened the length which led me to eliminate the vent in the back (it really wasn’t necessary for walking ease).