diff --git a/avatar/management/commands/rebuild_avatars.py b/avatar/management/commands/rebuild_avatars.py
new file mode 100644
index 0000000..a58173b
--- /dev/null
+++ b/avatar/management/commands/rebuild_avatars.py
@@ -0,0 +1,15 @@
+from django.core.management.base import NoArgsCommand
+from django.conf import settings
+
+from avatar.models import Avatar
+
+AUTO_GENERATE_AVATAR_SIZES = getattr(settings, 'AUTO_GENERATE_AVATAR_SIZES', (80,))
+
+class Command(NoArgsCommand):
+    help = "Import avatars from Gravatar, and store them locally."
+    
+    def handle_noargs(self, **options):
+        for avatar in Avatar.objects.all():
+            for size in AUTO_GENERATE_AVATAR_SIZES:
+                print "Rebuilding Avatar id=%s at size %s." % (avatar.id, size)
+                avatar.create_thumbnail(size)
\ No newline at end of file