Simplicity 2131; ©1957; Jr. Misses' and Misses' Evening Dress: Dress has an underdress and an overdress. Three gathered flounces are stitched to the underdress skirt. V. 1 overdress bodice is of one fabric, underdress of another fabric, flounces of a third fabric. Upper edge of overdress bodice folds back and allows row of ruffles on underdress to show. V. 2 underdress bodice has ribbon trim. Ribbon shoulder straps are optional. As featured in Seventeen magazine, July 1957 [insert your…