1//The CSS:
2
3.form-group.required .control-label:after {
4 content:"*";
5 color:red;
6}
7
8//Then in your HTML:
9
10<form>
11 <div class="form-group required">
12 <label class="control-label">Required Field</label>
13 ...
14 </div>
15</form>