From the Heart Side Quests

After receiving the Happy Clover from Romi, speak to the King of Hyrule in the throne room of Hyrule Castle.

Next, head for the grove south-west from Hyrule Castle Town and complete Stilled Southern Hyrule Field.

Reward:
Zelda’s original clothes, the Customary Attire.

You received a “Happy Clover” from a girl named Romi. She suggested you give it to the King of Hyrule.

You received word that Romi left the castle town. The soldiers are searching Hyrule Field for her.

According to the report, Romi was seen running down the road away from town.

Romi’s dog was found next to a Rift. It’s possible that poor Romi is trapped in the Rift.

You found Romi inside the Rift. Save her by mending the Rift.

After saving Romi from the Rift, you spoke with the King of Hyrule. He returned your dress to you and said to come home anytime.

X: 7289 Y: 7298

From girl with a dog near the center of Hyrule Castle Town.

May not appear until you’ve completed more dungeons.