Very easy and made in one piece. (Used the linked free pattern with one adjustment: I didn't care for the join being in the front of the dress so on the last row of the bodice, continue with 4 hdc, and 10 sc to the side of the dress
I did 5 rows of seed stitch for the edges of the sleeves. I think if I were to do this again, I would choose a dk rather than a worsted. I worry this dress will be heavy. A dk yarn would make it more delicate looking.