Make coat according to directions given for doll's coat.
Measure the length of the doll's leg for the length of the trousers. Use flat web and sew it into two rectangular pieces wide enough to make each leg a little full.
Join the inside seams part way and then join the open edge of the right front with the open edge of the left front. Do the same with the back edges. Put a draw-string around the top, or a piece of the web may be used for a waistband. Put in a draw-string around the bottom of each leg.