Images not centered

When I insert images into posts the vertical ones are not centered even with <img class="aligncenter added.

Example here, 3rd image: http://eyewonderphotography.com/jessica-brandon-maternity/

My other sites dont have that problem but I havent been able to figure out what it is in my css causing the issue.

Appreciate any help! Thanks

Here is whats under my Image section:

.featureimg {
	display: block;
	text-align: center;
	line-height: 0;
	}
img.centered {
	display: block;
	margin: 12px auto 12px;
	padding: 0px;
	}
img.alignnone {
	padding: 0px;
	margin: 12px 0px;
	display: inline;
	}
img.alignright {
	padding: 0px;
	margin: 12px 0px 12px 24px;
	display: inline;
	}
img.alignleft {
	display: inline;
	padding: 0px;
	margin: 12px 24px 12px 0px;
	}
.aligncenter {
	margin: 12px auto 12px;
	}
.alignright {
	float: right;
	margin: 12px 0px 12px 24px;
	}
.alignleft {
	float: left;
	margin: 12px 24px 12px 0px;
	}
.wp-caption {
	background: #F9F9F9;
	max-width: 100%;
	text-align: center;
	padding: 0px 0px 6px 0px;
	margin-bottom: 12px;
	border: 1px solid #DDDDDD;
	}
.wp-caption img {
	max-width: 96%;
	margin: 0px auto 0px;
	padding: 6px 6px 0px 6px;
	}
.wp-caption p.wp-caption-text {
	display: inline;
	font-size: 0.8em;
	line-height: 1.6;
	margin: 0px 0px 0px 0px;
	padding: 0px 0px 0px 0px;
	}
.postarea.full .featureimg img,
.postarea.full .featurevid,
.postarea.blog-full .featureimg img,
.postarea.blog-full .featurevid,
.postarea.blog-small .featureimg img,
.postarea.blog-small .featurevid {
	display: block;
	text-align: center;
	margin: 12px auto 12px;
	overflow: hidden;
	}
.postarea.portfolio .featureimg,
.postarea.portfolio .featurevid {
	text-align: center;
	line-height: 0;
	margin: 0px auto 0px;
	overflow: hidden;
	}
.postarea .featureimg.page img {
	float: left;
	margin: 0px 30px 30px 0px;
	}