Part of a two-piece set - “Princess Suit for Small Girls”
The pants pattern is described here.
For the matching pullover, see Princess Pullover for Small Girls

Yardage for pullover
Color 1: 1 ball Rauma Finullgarn
Color 2: 2 (2,3) balls
Color 3: 2 (3,3) balls

Waist Measurement: 19 5/8 (20 7/8, 21 5/8) inches