What is IsLocked?

IsLocked is a property available to all appearances which, when enabled, hides the respective model from the Hand Mirror tool.

An example utilizing the property:

{
  "Name": "Colorable Mouse Ears",
  "IsLocked": true,
  "FrontHat": {
    "ColorMasks": [
      [ 191, 183, 181 ]
    ],
    "StartingPosition": {
      "X": 0,
      "Y": 0
    },
    "HeadPosition": {
      "X": -2,
      "Y": 0
    },
    "HatSize": {
      "Width": 16,
      "Length": 16
    }
  }
}

This property can easily be changed by using Content Patcher to modify Data/PeacefulEnd/FashionSense/AppearanceData.

An example of utilizing Content Patcher to lock the hat Animated Pumpkin Head until 9PM in the game:

{
  "Format": "1.26.0",
  "Changes": [
    {
      "Action": "EditData",
      "Target": "Data/PeacefulEnd/FashionSense/AppearanceData",
      "Fields": {
        "ExampleAuthor.ExampleFashionSensePack/Hat/Animated Pumpkin Head": {
          "IsLocked": true
        }
      },
      "When": {
        "Time": "{{Range: 0600, 1800}}"
      },
      "Update": "OnTimeChange"
    },
    {
      "Action": "EditData",
      "Target": "Data/PeacefulEnd/FashionSense/AppearanceData",
      "Fields": {
        "ExampleAuthor.ExampleFashionSensePack/Hat/Animated Pumpkin Head": {
          "IsLocked": false
        }
      },
      "When": {
        "Time": "{{Range: 1900, 2600}}"
      },
      "Update": "OnTimeChange"
    }
  ]
}

For more information on utilizing Content Patcher for Fashion Sense, see this page for details.

Note: IsLocked is set to false by default.