diff --git a/app/models/item.rb b/app/models/item.rb
index 11cf774e..9650dc81 100644
--- a/app/models/item.rb
+++ b/app/models/item.rb
@@ -14,6 +14,9 @@ class Item < ApplicationRecord
   has_one :nc_mall_record
   has_many :parent_swf_asset_relationships, :as => :parent
   has_many :swf_assets, :through => :parent_swf_asset_relationships
+  belongs_to :dyeworks_base_item, class_name: "Item",
+    default: -> { inferred_dyeworks_base_item }, optional: true
+
 
   attr_writer :current_body_id, :owned, :wanted
 
@@ -208,7 +211,7 @@ class Item < ApplicationRecord
       Dyeworks\s+(?<color>\S+)\s*(?<base>.+)
     )$
   }x
-  def dyeworks_base_item
+  def inferred_dyeworks_base_item
     name_match = name.match(DYEWORKS_NAME_PATTERN)
     return nil if name_match.nil?
 
diff --git a/db/migrate/20240608022149_add_dyeworks_base_item_id_to_items.rb b/db/migrate/20240608022149_add_dyeworks_base_item_id_to_items.rb
new file mode 100644
index 00000000..6f197f6e
--- /dev/null
+++ b/db/migrate/20240608022149_add_dyeworks_base_item_id_to_items.rb
@@ -0,0 +1,91 @@
+class AddDyeworksBaseItemIdToItems < ActiveRecord::Migration[7.1]
+  def change
+    add_reference :items, :dyeworks_base_item, type: :integer,
+      foreign_key: {to_table: :items}
+
+    # Find Dyeworks items, and fill in their base item field. (The Item model
+    # is configured to try to infer this when saving Dyeworks-seeming items
+    # with no matching base item yet.)
+    #
+    # Some item names that exist right now are known to not fit the pattern, so
+    # we try to set them manually if present in this copy of the database.
+    reversible do |direction|
+      direction.up do
+        dyeworks_items = Item.where("name LIKE ?", "Dyeworks %").to_a
+
+        puts "Found #{dyeworks_items.size} Dyeworks items, " +
+             "inferring base items…"
+        dyeworks_items.each(&:save!)
+
+        num_successes = dyeworks_items.select(&:dyeworks?).size
+        puts "Inferred Dyeworks base item for #{num_successes} items"
+
+        set_manually "Baby Valentine Jumper and Shirt",
+                     "Dyeworks Baby Blue: Baby Valentine Jumper",
+                     "Dyeworks Baby Pink: Baby Valentine Jumper",
+                     "Dyeworks Purple: Baby Valentine Jumper"
+
+        set_manually "Field of Flowers Foreground",
+                     "Dyeworks Black: Field of Flowers",
+                     "Dyeworks Blue: Field of Flowers",
+                     "Dyeworks Yellow: Field of Flowers"
+
+        set_manually "2010 Games Master Challenge NC Challenge Lulu Shirt",
+                     "Dyeworks Black: Games Master Challenge 2010 Lulu Shirt",
+                     "Dyeworks Orange: Games Master Challenge 2010 Lulu Shirt",
+                     "Dyeworks Purple: Games Master Challenge 2010 Lulu Shirt"
+
+        set_manually "Stars and Glitter Face Paint",
+                     "Dyeworks Blue: Stars and Glitter Facepaint",
+                     "Dyeworks Green: Stars and Glitter Facepaint",
+                     "Dyeworks Purple: Stars and Glitter Facepaint"
+
+        set_manually "Hanging Winter Candle Garland",
+                     "Dyeworks Brown: Hanging Winter Candles Garland",
+                     "Dyeworks Purple: Hanging Winter Candles Garland",
+                     "Dyeworks Silver: Hanging Winter Candles Garland"
+
+        set_manually "Lovely Berry Blush Makeup",
+                     "Dyeworks Magenta: Lovely Berry Blush",
+                     "Dyeworks Peach: Lovely Berry Blush",
+                     "Dyeworks Soft Pink: Lovely Berry Blush"
+
+        set_manually "Winter Lights Effect",
+                     "Dyeworks Orange & Pink: Winter Lights Effects",
+                     "Dyeworks Red & Green: Winter Lights Effects",
+                     "Dyeworks Yellow & Magenta: Winter Lights Effects"
+
+        danglers = Item.where("name LIKE ?", "Dyeworks %").
+          where(dyeworks_base_item_id: nil).to_a
+        puts "There are now #{danglers.size} Dyeworks-seeming items in the " +
+             "database without a matching base item."
+        danglers.each do |dangler|
+          puts "- #{dangler.name}"
+        end
+      end
+    end
+  end
+
+  private
+
+  def set_manually(base_item_name, *dyeworks_item_names)
+    base_item = Item.find_by_name(base_item_name)
+    if base_item.nil?
+      puts "Skipping all manual Dyeworks for base item #{base_item}: not found"
+      return
+    end
+
+    dyeworks_item_names.each do |dyeworks_item_name|
+      dyeworks_item = Item.find_by_name(dyeworks_item_name)
+      if dyeworks_item.nil?
+        puts "Skipping manual Dyeworks for #{base_item_name} -> " +
+          "#{dyeworks_item_name}: not found"
+        next
+      end
+
+      dyeworks_item.update!(dyeworks_base_item: base_item)
+      puts "Manually assigned Dyeworks #{base_item_name} -> " +
+        "#{dyeworks_item_name}"
+    end
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index c8b17787..f071ff9a 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.1].define(version: 2024_06_03_181855) do
+ActiveRecord::Schema[7.1].define(version: 2024_06_08_022149) do
   create_table "alt_styles", charset: "utf8mb4", collation: "utf8mb4_unicode_520_ci", force: :cascade do |t|
     t.integer "species_id", null: false
     t.integer "color_id", null: false
@@ -136,6 +136,8 @@ ActiveRecord::Schema[7.1].define(version: 2024_06_03_181855) do
     t.string "name", null: false
     t.text "description", size: :medium, null: false
     t.string "rarity", default: "", null: false
+    t.integer "dyeworks_base_item_id"
+    t.index ["dyeworks_base_item_id"], name: "index_items_on_dyeworks_base_item_id"
     t.index ["modeling_status_hint", "created_at", "id"], name: "items_modeling_status_hint_and_created_at_and_id"
     t.index ["modeling_status_hint", "created_at"], name: "items_modeling_status_hint_and_created_at"
     t.index ["modeling_status_hint", "id"], name: "items_modeling_status_hint_and_id"
@@ -292,6 +294,7 @@ ActiveRecord::Schema[7.1].define(version: 2024_06_03_181855) do
 
   add_foreign_key "alt_styles", "colors"
   add_foreign_key "alt_styles", "species"
+  add_foreign_key "items", "items", column: "dyeworks_base_item_id"
   add_foreign_key "nc_mall_records", "items"
   add_foreign_key "outfits", "alt_styles"
 end