diff --git a/functions.php b/functions.php
index 52f51b434..c8ed8628c 100644
--- a/functions.php
+++ b/functions.php
@@ -336,11 +336,11 @@ function twentytwelve_entry_meta() {
 
 	// Translators: 1 is category, 2 is tag, 3 is the date and 4 is the author's name.
 	if ( $tag_list ) {
-		$utility_text = __( 'This entry was posted in %1$s and tagged %2$s on %3$s by %4$s.', 'twentytwelve' );
+		$utility_text = __( 'This entry was posted in %1$s and tagged %2$s on %3$s<span class="by-author"> by %4$s</span>.', 'twentytwelve' );
 	} elseif ( $categories_list ) {
-		$utility_text = __( 'This entry was posted in %1$s on %3$s by %4$s.', 'twentytwelve' );
+		$utility_text = __( 'This entry was posted in %1$s on %3$s<span class="by-author"> by %4$s</span>.', 'twentytwelve' );
 	} else {
-		$utility_text = __( 'This entry was posted on %3$s by %4$s.', 'twentytwelve' );
+		$utility_text = __( 'This entry was posted on %3$s<span class="by-author"> by %4$s</span>.', 'twentytwelve' );
 	}
 
 	printf(
@@ -386,6 +386,9 @@ function twentytwelve_body_class( $classes ) {
 	if ( wp_style_is( 'twentytwelve-fonts', 'queue' ) )
 		$classes[] = 'custom-font-enabled';
 
+	if ( ! is_multi_author() )
+		$classes[] = 'single-author';
+
 	return $classes;
 }
 add_filter( 'body_class', 'twentytwelve_body_class' );
diff --git a/style.css b/style.css
index ae4323b47..c19a97ac0 100644
--- a/style.css
+++ b/style.css
@@ -881,6 +881,9 @@ footer.entry-meta {
 	line-height: 1.846153846;
 	color: #777;
 }
+.single-author .entry-meta .by-author {
+	display: none;
+}
 
 
 /* =Archives