diff --git a/CHANGELOG.md b/CHANGELOG.md
index ef0fc0db6..d4dc24aa7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@ Features:
   - Use humanized attribute name in label errors (#146, @atipugin)
   - Allow to skip label rendering (#145, @atipugin)
   - Added a `required` CSS class for labels with required attributes (#150, @krsyoung)
+  - Added option to customize labels' class.
 
 ## 2.2.0 (2014-09-16)
 
diff --git a/README.md b/README.md
index b991d5f70..d375029a3 100644
--- a/README.md
+++ b/README.md
@@ -133,6 +133,13 @@ class, which keeps your labels accessible to those using screen readers.
 ```erb
 <%= f.text_area :comment, hide_label: :true, placeholder: "Leave a comment..." %>
 ```
+
+To add custom classes to the field's label:
+
+```erb
+<%= f.text_field :email, label_class: "custom-class" %>
+```
+
 #### Required Fields
 
 A label that is associated with a required field is automatically annotated with
diff --git a/lib/bootstrap_form/form_builder.rb b/lib/bootstrap_form/form_builder.rb
index d1d52b589..b0a297713 100644
--- a/lib/bootstrap_form/form_builder.rb
+++ b/lib/bootstrap_form/form_builder.rb
@@ -100,21 +100,24 @@ def time_zone_select_with_bootstrap(method, priority_zones = nil, options = {},
 
     def check_box_with_bootstrap(name, options = {}, checked_value = "1", unchecked_value = "0", &block)
       options = options.symbolize_keys!
+      check_box_options = options.except(:label, :label_class, :help, :inline)
 
-      html = check_box_without_bootstrap(name, options.except(:label, :help, :inline), checked_value, unchecked_value)
+      html = check_box_without_bootstrap(name, check_box_options, checked_value, unchecked_value)
       label_content = block_given? ? capture(&block) : options[:label]
       html.concat(" ").concat(label_content || (object && object.class.human_attribute_name(name)) || name.to_s.humanize)
 
       label_name = name
       label_name = "#{name}_#{checked_value}" if options[:multiple]
 
-      disabled_class = options[:disabled] ? " disabled" : ""
+      disabled_class = " disabled" if options[:disabled]
+      label_class    = options[:label_class]
 
       if options[:inline]
-        label(label_name, html, class: "checkbox-inline#{disabled_class}")
+        label_class = " #{label_class}" if label_class
+        label(label_name, html, class: "checkbox-inline#{disabled_class}#{label_class}")
       else
         content_tag(:div, class: "checkbox#{disabled_class}") do
-          label(label_name, html)
+          label(label_name, html, class: label_class)
         end
       end
     end
@@ -123,16 +126,19 @@ def check_box_with_bootstrap(name, options = {}, checked_value = "1", unchecked_
 
     def radio_button_with_bootstrap(name, value, *args)
       options = args.extract_options!.symbolize_keys!
-      args << options.except(:label, :help, :inline)
+      args << options.except(:label, :label_class, :help, :inline)
 
       html = radio_button_without_bootstrap(name, value, *args) + " " + options[:label]
-      disabled_class = options[:disabled] ? " disabled" : ""
+
+      disabled_class = " disabled" if options[:disabled]
+      label_class    = options[:label_class]
 
       if options[:inline]
-        label(name, html, class: "radio-inline#{disabled_class}", value: value)
+        label_class = " #{label_class}" if label_class
+        label(name, html, class: "radio-inline#{disabled_class}#{label_class}", value: value)
       else
         content_tag(:div, class: "radio#{disabled_class}") do
-          label(name, html, value: value)
+          label(name, html, value: value, class: label_class)
         end
       end
     end
@@ -276,8 +282,6 @@ def form_group_builder(method, options, html_options = nil)
 
       options = convert_form_tag_options(method, options) if acts_like_form_tag
 
-      label = options.delete(:label)
-      label_class = hide_class if options.delete(:hide_label)
       wrapper_class = options.delete(:wrapper_class)
       wrapper_options = options.delete(:wrapper)
       help = options.delete(:help)
@@ -300,8 +304,11 @@ def form_group_builder(method, options, html_options = nil)
       end
 
       unless options.delete(:skip_label)
+        label_class = hide_class if options.delete(:hide_label)
+        label_class ||= options.delete(:label_class)
+
         form_group_options.reverse_merge!(label: {
-          text: label,
+          text: options.delete(:label),
           class: label_class
         })
       end
diff --git a/test/bootstrap_checkbox_test.rb b/test/bootstrap_checkbox_test.rb
index 7e7063638..c2631f5c2 100644
--- a/test/bootstrap_checkbox_test.rb
+++ b/test/bootstrap_checkbox_test.rb
@@ -27,6 +27,11 @@ def setup
     assert_equal expected, @builder.check_box(:terms) { "I agree to the terms" }
   end
 
+  test "check_box accepts a custom label class" do
+    expected = %{<div class="checkbox"><label class="btn" for="user_terms"><input name="user[terms]" type="hidden" value="0" /><input id="user_terms" name="user[terms]" type="checkbox" value="1" /> Terms</label></div>}
+    assert_equal expected, @builder.check_box(:terms, label_class: 'btn')
+  end
+
   test "check_box responds to checked_value and unchecked_value arguments" do
     expected = %{<div class="checkbox"><label for="user_terms"><input name="user[terms]" type="hidden" value="no" /><input id="user_terms" name="user[terms]" type="checkbox" value="yes" /> I agree to the terms</label></div>}
     assert_equal expected, @builder.check_box(:terms, {label: 'I agree to the terms'}, 'yes', 'no')
@@ -42,6 +47,11 @@ def setup
     assert_equal expected, @builder.check_box(:terms, label: 'I agree to the terms', inline: true, disabled: true)
   end
 
+  test "inline checkboxes with custom label class" do
+    expected = %{<label class="checkbox-inline btn" for="user_terms"><input name="user[terms]" type="hidden" value="0" /><input id="user_terms" name="user[terms]" type="checkbox" value="1" /> Terms</label>}
+    assert_equal expected, @builder.check_box(:terms, inline: true, label_class: 'btn')
+  end
+
   test 'collection_check_boxes renders the form_group correctly' do
     collection = [Address.new(id: 1, street: 'Foobar')]
     expected = %{<input id="user_misc" multiple="multiple" name="user[misc][]" type="hidden" value="" /><div class="form-group"><label class="control-label" for="user_misc">This is a checkbox collection</label><div class="checkbox"><label for="user_misc_1"><input id="user_misc_1" name="user[misc][]" type="checkbox" value="1" /> Foobar</label></div><span class="help-block">With a help!</span></div>}
diff --git a/test/bootstrap_form_group_test.rb b/test/bootstrap_form_group_test.rb
index b8edd2563..26d79c711 100644
--- a/test/bootstrap_form_group_test.rb
+++ b/test/bootstrap_form_group_test.rb
@@ -17,6 +17,11 @@ def setup
     assert_equal expected, @builder.text_field(:email, hide_label: true)
   end
 
+  test "adding a custom label class" do
+    expected = %{<div class="form-group"><label class="btn control-label required" for="user_email">Email</label><input class="form-control" id="user_email" name="user[email]" type="text" value="steve@example.com" /></div>}
+    assert_equal expected, @builder.text_field(:email, label_class: 'btn')
+  end
+
   test "skipping a label" do
     expected = %{<div class="form-group"><input class="form-control" id="user_email" name="user[email]" type="text" value="steve@example.com" /></div>}
     assert_equal expected, @builder.text_field(:email, skip_label: true)
diff --git a/test/bootstrap_radio_button_test.rb b/test/bootstrap_radio_button_test.rb
index 5d9843dbe..2c928dec2 100644
--- a/test/bootstrap_radio_button_test.rb
+++ b/test/bootstrap_radio_button_test.rb
@@ -12,21 +12,31 @@ def setup
     assert_equal expected, @builder.radio_button(:misc, '1', label: 'This is a radio button')
   end
 
-  test "radio_button inline label is set correctly" do
-    expected = %{<label class="radio-inline" for="user_misc_1"><input id="user_misc_1" name="user[misc]" type="radio" value="1" /> This is a radio button</label>}
-    assert_equal expected, @builder.radio_button(:misc, '1', label: 'This is a radio button', inline: true)
-  end
-
   test "radio_button disabled label is set correctly" do
     expected = %{<div class="radio disabled"><label for="user_misc_1"><input disabled="disabled" id="user_misc_1" name="user[misc]" type="radio" value="1" /> This is a radio button</label></div>}
     assert_equal expected, @builder.radio_button(:misc, '1', label: 'This is a radio button', disabled: true)
   end
 
+  test "radio_button label class is set correctly" do
+    expected = %{<div class="radio"><label class="btn" for="user_misc_1"><input id="user_misc_1" name="user[misc]" type="radio" value="1" /> This is a radio button</label></div>}
+    assert_equal expected, @builder.radio_button(:misc, '1', label: 'This is a radio button', label_class: 'btn')
+  end
+
+  test "radio_button inline label is set correctly" do
+    expected = %{<label class="radio-inline" for="user_misc_1"><input id="user_misc_1" name="user[misc]" type="radio" value="1" /> This is a radio button</label>}
+    assert_equal expected, @builder.radio_button(:misc, '1', label: 'This is a radio button', inline: true)
+  end
+
   test "radio_button disabled inline label is set correctly" do
     expected = %{<label class="radio-inline disabled" for="user_misc_1"><input disabled="disabled" id="user_misc_1" name="user[misc]" type="radio" value="1" /> This is a radio button</label>}
     assert_equal expected, @builder.radio_button(:misc, '1', label: 'This is a radio button', inline: true, disabled: true)
   end
 
+  test "radio_button inline label class is set correctly" do
+    expected = %{<label class="radio-inline btn" for="user_misc_1"><input id="user_misc_1" name="user[misc]" type="radio" value="1" /> This is a radio button</label>}
+    assert_equal expected, @builder.radio_button(:misc, '1', label: 'This is a radio button', inline: true, label_class: 'btn')
+  end
+
   test 'collection_radio_buttons renders the form_group correctly' do
     collection = [Address.new(id: 1, street: 'Foobar')]
     expected = %{<div class="form-group"><label class="control-label" for="user_misc">This is a radio button collection</label><div class="radio"><label for="user_misc_1"><input id="user_misc_1" name="user[misc]" type="radio" value="1" /> Foobar</label></div><span class="help-block">With a help!</span></div>}