Index: bbp-includes/bbp-common-template.php
===================================================================
--- bbp-includes/bbp-common-template.php	(revision 3642)
+++ bbp-includes/bbp-common-template.php	(working copy)
@@ -614,6 +614,20 @@
 	if ( bbp_is_topic_archive() )
 		$bbp_classes[] = bbp_get_topic_post_type() . '-archive';
 
+	/** Topic Tags ************************************************************/
+
+	if ( bbp_is_topic_tag() ) {
+		$bbp_classes[] = bbp_get_topic_tag_tax_id();
+		$bbp_classes[] = bbp_get_topic_tag_tax_id() . '-' . bbp_get_topic_tag_slug();
+		$bbp_classes[] = bbp_get_topic_tag_tax_id() . '-' . bbp_get_topic_tag_id();
+	}
+
+	if ( bbp_is_topic_tag_edit() ) {
+		$bbp_classes[] = bbp_get_topic_tag_tax_id() . '-edit';
+		$bbp_classes[] = bbp_get_topic_tag_tax_id() . '-' . bbp_get_topic_tag_slug() . '-edit';
+		$bbp_classes[] = bbp_get_topic_tag_tax_id() . '-' . bbp_get_topic_tag_id() . '-edit';
+	}
+
 	/** Components ************************************************************/
 
 	if ( bbp_is_single_forum() )