diff --git a/src/main/java/emu/grasscutter/config/ConfigContainer.java b/src/main/java/emu/grasscutter/config/ConfigContainer.java
index 4b5928015..7694e6d9a 100644
--- a/src/main/java/emu/grasscutter/config/ConfigContainer.java
+++ b/src/main/java/emu/grasscutter/config/ConfigContainer.java
@@ -17,19 +17,21 @@ import static emu.grasscutter.Grasscutter.*;
 public class ConfigContainer {
     /*
      * Configuration changes:
-     * Version 5 - 'questing' has been changed from a boolean
-     *             to a container of options ('questOptions').
-     *             This field will be removed in future versions.
-     * Version 6 - 'questing' has been fully replaced with 'questOptions'.
-     *             The field for 'legacyResources' has been removed.
-     * Version 7 - 'regionKey' is being added for authentication
-     *             with the new dispatch server.
-     * Version 8 - 'server' is being added for enforcing handbook server
-     *             addresses.
-     * Version 9 - 'limits' was added for handbook requests.
+     * Version  5 - 'questing' has been changed from a boolean
+     *              to a container of options ('questOptions').
+     *              This field will be removed in future versions.
+     * Version  6 - 'questing' has been fully replaced with 'questOptions'.
+     *              The field for 'legacyResources' has been removed.
+     * Version  7 - 'regionKey' is being added for authentication
+     *              with the new dispatch server.
+     * Version  8 - 'server' is being added for enforcing handbook server
+     *              addresses.
+     * Version  9 - 'limits' was added for handbook requests.
+     * Version 10 - 'trialCostumes' was added for enabling costumes
+     *              on trial avatars.
      */
     private static int version() {
-        return 9;
+        return 10;
     }
 
     /**
@@ -255,6 +257,8 @@ public class ConfigContainer {
         public boolean staminaUsage = true;
         public boolean energyUsage = true;
         public boolean fishhookTeleport = true;
+        public boolean trialCostumes = false;
+
         @SerializedName(value = "questing", alternate = "questOptions")
         public Questing questing = new Questing();
         public ResinOptions resinOptions = new ResinOptions();
diff --git a/src/main/java/emu/grasscutter/game/avatar/Avatar.java b/src/main/java/emu/grasscutter/game/avatar/Avatar.java
index b87f32272..2838a7697 100644
--- a/src/main/java/emu/grasscutter/game/avatar/Avatar.java
+++ b/src/main/java/emu/grasscutter/game/avatar/Avatar.java
@@ -1,7 +1,5 @@
 package emu.grasscutter.game.avatar;
 
-import static emu.grasscutter.config.Configuration.GAME_OPTIONS;
-
 import dev.morphia.annotations.*;
 import emu.grasscutter.GameConstants;
 import emu.grasscutter.data.GameData;
@@ -32,12 +30,15 @@ import emu.grasscutter.net.proto.TrialAvatarInfoOuterClass.TrialAvatarInfo;
 import emu.grasscutter.server.packet.send.*;
 import emu.grasscutter.utils.helpers.ProtoHelper;
 import it.unimi.dsi.fastutil.ints.*;
-import java.util.*;
-import java.util.stream.Stream;
-import javax.annotation.*;
 import lombok.*;
 import org.bson.types.ObjectId;
 
+import javax.annotation.*;
+import java.util.*;
+import java.util.stream.Stream;
+
+import static emu.grasscutter.config.Configuration.GAME_OPTIONS;
+
 @Entity(value = "avatars", useDiscriminator = false)
 public class Avatar {
     @Transient @Getter private final Int2ObjectMap<GameItem> equips;
@@ -1243,13 +1244,15 @@ public class Avatar {
                         });
 
         // Add costume if avatar has a costume.
-        GameData.getAvatarCostumeDataItemIdMap()
+        if (GAME_OPTIONS.trialCostumes) {
+            GameData.getAvatarCostumeDataItemIdMap()
                 .values()
                 .forEach(
-                        costumeData -> {
-                            if (costumeData.getCharacterId() != this.getAvatarId()) return;
-                            this.setCostume(costumeData.getId());
-                        });
+                    costumeData -> {
+                        if (costumeData.getCharacterId() != this.getAvatarId()) return;
+                        this.setCostume(costumeData.getId());
+                    });
+        }
     }
 
     /** Equips the items applied from {@link Avatar#applyTrialItems()}. */