diff --git a/Definitions/chosen-0.9.d.ts b/Definitions/chosen-0.9.d.ts
new file mode 100644
index 000000000..680b9622e
--- /dev/null
+++ b/Definitions/chosen-0.9.d.ts
@@ -0,0 +1,24 @@
+// Type definitions for Chosen.JQuery 0.9
+// Project: http://harvesthq.github.com/chosen/
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+
+/// <reference path="jquery-1.8.d.ts"/>
+
+interface ChosenOptions {
+    allow_single_deselect?: bool;
+    disable_search_threshold?: number;
+    disable_search?: bool;
+    search_contains?: bool;
+    single_backstroke_delete?: bool;
+    max_selected_options?: number;
+    placeholder_text_multiple?: string;
+    placeholder_text?: string;
+    placeholder_text_single?: string;
+    no_results_text?: string;
+}
+
+interface JQuery {
+    chosen(): JQuery;
+    chosen(options: ChosenOptions): JQuery;
+}
\ No newline at end of file
diff --git a/README.md b/README.md
index a12079134..b732bd80a 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,7 @@ Complete
 * [Backbone.js](http://backbonejs.org/)
 * [Bootstrap](http://twitter.github.com/bootstrap/)
 * [CodeMirror](http://codemirror.net) (by [François de Campredon](https://github.com/fdecampredon))
+* [Chosen](http://harvesthq.github.com/chosen/)
 * [dynatree](http://code.google.com/p/dynatree/) (by [François de Campredon](https://github.com/fdecampredon))
 * [ember.js](http://emberjs.com/)
 * [Express](http://expressjs.com/)
@@ -43,7 +44,6 @@ Complete
 
 Next
 ----
-* Chosen
 * Facebook SDK
 * jQuery.Validate
 * google.visualization
diff --git a/Tests/chosen-tests.ts b/Tests/chosen-tests.ts
new file mode 100644
index 000000000..855aabe94
--- /dev/null
+++ b/Tests/chosen-tests.ts
@@ -0,0 +1,8 @@
+/// <reference path="../Definitions/chosen-0.9.d.ts" />
+
+$(".chzn-select").chosen({ no_results_text: "No results matched" });
+$("#form_field").chosen().change();
+$("#form_field").trigger("liszt:updated");
+
+$(".chzn-select").chosen();
+$(".chzn-select-deselect").chosen({ allow_single_deselect: true });
\ No newline at end of file