diff --git a/api/outfitImage.js b/api/outfitImage.js
index f44fd9a..4738049 100644
--- a/api/outfitImage.js
+++ b/api/outfitImage.js
@@ -49,6 +49,8 @@ import getVisibleLayers, {
 const VALID_LAYER_URLS = [
   /^https:\/\/(impress-asset-images\.openneo\.net|impress-asset-images\.s3\.amazonaws\.com)\/(biology|object)\/[0-9]{3}\/[0-9]{3}\/[0-9]{3}\/[0-9]+\/(150|300|600)x(150|300|600)\.png(\?[a-zA-Z0-9_-]+)?$/,
   /^http:\/\/images\.neopets\.com\/cp\/(bio|object|items)\/data\/[0-9]{3}\/[0-9]{3}\/[0-9]{3}\/[a-zA-Z0-9_-]+\/[a-zA-Z0-9_-]+\.(svg|png)(\?.*)?$/,
+  // NOTE: We don't validate the layer's libraryUrl, because assetImage performs validation better than we could!
+  /^https:\/\/impress-2020\.openneo\.net\/api\/assetImage\?libraryUrl=[^&]+(&size=(300|600))?$/,
 ];
 
 async function handle(req, res) {