The 1970's Simplicity 5143 Hip Hugger Big Bell Pants in size 10 are a rare and sought-after collectible sewing pattern for women. The brand Simplicity is well-known for its quality patterns, and these pants feature a stylish design with a big bell bottom that would have been popular in the 1970s. This pattern offers a unique opportunity for sewing enthusiasts to create a vintage-inspired piece of clothing that reflects the fashion trends of that era.