diff --git a/readme.md b/readme.md
index dcb8a56..538d7a0 100644
--- a/readme.md
+++ b/readme.md
@@ -26,6 +26,7 @@ $(selector).autocomplete(options);
 | `preventBadQueries` | `true` | Boolean value indicating if it should prevent future Ajax requests for queries with the same root if no results were returned. E.g. if `Jam` returns no suggestions, it will not fire for any future query that starts with `Jam` |
 | `autoSelectFirst` | `false` | If set to `true`, first item will be selected when showing suggestions |
 | `beforeRender` | optional | `function (container, suggestions) {}` called before displaying the suggestions. You may manipulate suggestions DOM before it is displayed |
+| `afterRender` | optional | `function (container, suggestions) {}` called after displaying the suggestions. You may manipulate suggestions DOM after it is displayed. Useful when for example you need add class for CSS transition animation. |
 | `formatResult` | optional | `function (suggestion, currentValue) {}` custom function to format suggestion entry inside suggestions container |
 | `formatGroup` | optional | `function (suggestion, category) {}` custom function to format group header |
 | `groupBy` | optional | property name of the suggestion `data` object, by which results should be grouped |
@@ -187,6 +188,36 @@ Style sample:
 .autocomplete-group strong { display: block; border-bottom: 1px solid #000; }
 ```
 
+CSS Animation:
+
+```css
+.autocomplete-suggestions {
+    -webkit-transform-origin: 50% 0;
+    -ms-transform-origin: 50% 0;
+    transform-origin: 50% 0;
+    -webkit-transform: scale(0.75) translateY(-21px);
+    -ms-transform: scale(0.75) translateY(-21px);
+    transform: scale(0.75) translateY(-21px);
+    -webkit-transition: all 0.15s ease-out;
+    transition: all 0.15s ease-out;
+}
+.autocomplete-suggestions.open {
+    -webkit-transform: scale(1) translateY(0);
+    -ms-transform: scale(1) translateY(0);
+    transform: scale(1) translateY(0);
+}
+```
+
+```javascript
+$('#autocomplete').autocomplete({
+    beforeRender: function(container) {
+        container.removeClass('open');
+    },
+    afterRender: function(container) {
+        container.addClass('open');
+    }
+})
+```
 
 ## Response Format
 
diff --git a/src/jquery.autocomplete.js b/src/jquery.autocomplete.js
index b99146c..b35ef0e 100644
--- a/src/jquery.autocomplete.js
+++ b/src/jquery.autocomplete.js
@@ -656,6 +656,7 @@
                 container = $(that.suggestionsContainer),
                 noSuggestionsContainer = $(that.noSuggestionsContainer),
                 beforeRender = options.beforeRender,
+                afterRender = options.afterRender,
                 html = '',
                 category,
                 formatGroup = function (suggestion, index) {
@@ -696,6 +697,10 @@
             that.fixPosition();
             container.show();
 
+            if ($.isFunction(afterRender)) {
+                afterRender.call(that.element, container, that.suggestions);
+            }
+
             // Select first value by default:
             if (options.autoSelectFirst) {
                 that.selectedIndex = 0;
@@ -710,6 +715,7 @@
         noSuggestions: function() {
              var that = this,
                  beforeRender = that.options.beforeRender,
+                 afterRender = that.options.afterRender,
                  container = $(that.suggestionsContainer),
                  noSuggestionsContainer = $(that.noSuggestionsContainer);
 
@@ -730,6 +736,11 @@
             that.fixPosition();
 
             container.show();
+
+            if ($.isFunction(afterRender)) {
+                afterRender.call(that.element, container, that.suggestions);
+            }
+
             that.visible = true;
         },