say Edit a Copy on outfits#show if it a guest outfit and user is a guest

app/helpers/outfits_helper.rb

@@ -13,7 +13,7 @@ module OutfitsHelper
       outfit = outfit_or_options
     end
     query = outfit.to_query
-    query << "&outfit=#{outfit.id}" if outfit.user == current_user
+    query << "&outfit=#{outfit.id}" if user_signed_in? && outfit.user == current_user
     link_to content, wardrobe_path(:anchor => query), options
   end
 

app/views/outfits/show.html.haml

@@ -1,7 +1,7 @@
 - title(@outfit.name || "Shared outfit")
 = link_to_edit_outfit(@outfit, :class => 'button', :id => 'outfit-wardrobe-link') do
   Edit
-  - unless @outfit.user == current_user
+  - unless user_signed_in? && @outfit.user == current_user
     a copy
 - if @outfit.user_id
   #outfit-user