The Peach Doll is a doll owned by Goombaria. It somehow got lost in Jr. Troopa's territory, possibly because Jr. Troopa stole it. The Peach Doll, or Dolly, got stuck up in a tree. Mario needs to hit the tree with his hammer to get the doll down. If you return Dolly to Goombaria, she gives Mario a Star Piece (and a kiss).
There have been Peach Dolls in many other Mario games/media, such as:
- The Peach Doll owned by Gaz in Super Mario RPG: Legend of the Seven Stars
- The Peach Doll present given to Peach in Mario Party 4
- The Mini-Peach toys found in Mario vs. Donkey Kong 2: March of the Minis.