First I cut out four pieces, two for the outer and two for the lining for the top part of the dress. I sowed them all up and cut a bit out of the back for the buttons. Then I made button loops and sowed them in-between the two layers.
I folded and pinned the bottom part to the top and sowed it up. I did the same with the lining.
Here is the birthday girl in her new birthday dress, she is very happy with it and I am very happy that it fits her so well.