Lemonade is the doll that Baby Piggy brings to Dr. Brown's office in the 1992 Muppet Babies storybook Piggy Visits the Doctor.
The doctor allows Lemonade to have all the same checkup measures applied to her as well. After both undressing, Piggy puts Lemonade on the baby scale, discovering she weighs one and a half pounds. She continues on to listen to her lungs, check her throat, and feel her tummy. Piggy even gives Lemonade a shot in the arm.
Because her behavior was so good, both patients were rewarded with matching jewellery, although Lemonade's necklace was really Piggy's bracelet.