Molly Davis

Molly Davis is the pretty little sister of Andy. Like her brother, she ages between each of her appearances. She appears as an infant in Toy Story, as an adorable toddler in Toy Story 2 and as a lovely pre-teen in Toy Story 3. In Toy Story 3, she was voiced by Beatrice Miller.

Toy Story
Molly, being a one year old toddler, doesn't have a major part and only appears in a few scenes. Early in the movie while Andy is playing, Mr. Potato Head lands in "jail", which also happens to be her crib. Molly slobbers all over and takes Mr. Potato Head apart, much to his later protests. Afterward, Andy takes her downstairs for his birthday party. At the end, she is seen listening to Hakuna Matata in the car, and giggles when she sees Woody and Buzz in her mirror, trying to reach the moving truck. At the end of the film, she receives a Mrs. Potato Head toy for Christmas, much to the joy of Mr. Potato Head, who wished for her during the first part of the movie.

Toy Story 2
Molly mainly appears at the beginning, being held by her mother, and at the end where she is shown to be walking, with Andy's help. She is mentioned by Bo Peep when searching for Woody's hat in her room. She is mentioned again by Woody when he and Jessie are on the plane, because he says, "And he (Andy) has a little sister"!

Toy Story 3
Molly makes her final appearance in Toy Story 3, where she is somewhere between 10–13 years old. She is first seen in Andy's room laughing because Andy still has his old toys but is lectured by both Andy and her mom. She decides to donate many of her things, including Barbie to Sunnyside Daycare, and listens to Music while reading a Tween magazine. She is then seen at the end saying to Andy, "Aren't you going to say goodbye to Buster?"

Relationship with her brother
In the first movie, Andy shares his room with Molly and doesn't seem to have a problem with it. In the second movie, they have separate rooms, but as seen in the clips at the start of the third film, Andy still doesn't mind Molly being in his room. He is seen at the end of the second film helping his sister walk to their mother and comments that he can teach her to drive. However, by the present time in the third film, Andy, having developed a more teenager-like personality, is much less willing to let Molly be in his room and doesn't allow her to touch his things, but still loves her. He helps her with a box full of toys she chose to donate to Sunnyside, and asks her if she will miss him. She then asks her brother if she can still have his room if she says "no", believing it will be hers when he leaves. When Andy says "nope", Molly replies that she will miss him. Near the end of the film, Andy mentions that he and Molly "said goodbye like 10 times", suggesting they are close.