NOTE: If image width = height, you get circles. If image width < or > height, you get ovals.
<h3>Circular Images, Equal Height and Width</h3> <ul class="list-inline gallery"> <li><img class="img-circle zoom" src="http://lorempixel.com/110/110/abstract/1"></li> <li><img class="img-circle zoom" src="http://lorempixel.com/110/110/abstract/2"></li> <li><img class="img-circle zoom" src="http://lorempixel.com/110/110/abstract/3"></li> <li><img class="img-circle zoom" src="http://lorempixel.com/110/110/abstract/4"></li> </ul>
<h3>Oval Images, Unequal Height and Width</h3> <ul class="list-inline gallery"> <li><img class="img-circle zoom" src="http://lorempixel.com/125/75/abstract/1"></li> <li><img class="img-circle zoom" src="http://lorempixel.com/125/75/abstract/2"></li> <li><img class="img-circle zoom" src="http://lorempixel.com/125/75/abstract/3"></li> <li><img class="img-circle zoom" src="http://lorempixel.com/125/75/abstract/4"></li> </ul>