Of course, for BS2:
<div class="row-fluid"> <div class="span6"><img src="yourimage"/></div> <div class="span6"><img src="yourimage"/></div> </div>
For BS3:
<div class="row"> <div class="col-xs-6 col-md-6"><img src="yourimage"/></div> <div class="col-xs-6 col-md-6"><img src="yourimage"/></div> </div>
EDIT: 03/01/2017 For BS4 (w / FLEXBOX):
<div class="row"> <div class="col"><img src="yourimage"/></div> <div class="col"><img src="yourimage"/></div> </div>
Another solution is to put the images to the left:
<img class="pull-left" src="yourimage"/> <img class="pull-left" src="yourimage"/>
Ignacio correia
source share