Take in sides dress correctly from underarm

When the dress you want to wear is too big, and you are in a hurry, the first option is to start sewing from the underarm, down as far as you need to go. Then you turn it inside out and see that the seam is all puckered at the underarm. What happened! Why is it like that. This video explains how you can get it right and it will probably only take you another 2 minutes....