diff --git a/AsyncDisplayKit/ASImageNode.h b/AsyncDisplayKit/ASImageNode.h
index 165d8c2449..d1c4aa840b 100644
--- a/AsyncDisplayKit/ASImageNode.h
+++ b/AsyncDisplayKit/ASImageNode.h
@@ -27,9 +27,12 @@ typedef NS_ENUM(NSUInteger, ASImageNodeTint) {
  * Image modification block.  Use to transform an image before display.
  *
  * @param image The image to be displayed.
+ *
+ * @returns A transformed image.
  */
 typedef UIImage *(^asimagenode_modification_block_t)(UIImage *image);
 
+
 /**
  * @abstract Draws images.
  * @discussion Supports cropping, tinting, and arbitrary image modification blocks.
@@ -50,8 +53,6 @@ typedef UIImage *(^asimagenode_modification_block_t)(UIImage *image);
  */
 @property (nonatomic, assign) ASImageNodeTint tint;
 
-#pragma mark - Cropping
-
 /**
  * @abstract Indicates whether efficient cropping of the receiver is enabled.
  *
@@ -100,7 +101,6 @@ typedef UIImage *(^asimagenode_modification_block_t)(UIImage *image);
  */
 @property (nonatomic, readwrite, copy) asimagenode_modification_block_t imageModificationBlock;
 
-#pragma mark -
 /**
  * @abstract Marks the receiver as needing display and performs a block after
  * display has finished.
@@ -116,3 +116,20 @@ typedef UIImage *(^asimagenode_modification_block_t)(UIImage *image);
 - (void)setNeedsDisplayWithCompletion:(void (^)(BOOL canceled))displayCompletionBlock;
 
 @end
+
+
+ASDISPLAYNODE_EXTERN_C_BEGIN
+
+/**
+ * @abstract Image modification block that rounds (and optionally adds a border to) an image.
+ *
+ * @param borderWidth The width of the round border to draw, or zero if no border is desired.
+ * @param borderColor What colour border to draw.
+ *
+ * @see <imageModificationBlock>
+ *
+ * @returns An ASImageNode image modification block.
+ */
+asimagenode_modification_block_t ASImageNodeRoundBorderModificationBlock(CGFloat borderWidth, UIColor *borderColor);
+
+ASDISPLAYNODE_EXTERN_C_END
diff --git a/AsyncDisplayKit/ASImageNode.mm b/AsyncDisplayKit/ASImageNode.mm
index f64bc6d9f3..41b8c6b6e9 100644
--- a/AsyncDisplayKit/ASImageNode.mm
+++ b/AsyncDisplayKit/ASImageNode.mm
@@ -335,3 +335,30 @@
 }
 
 @end
+
+
+#pragma mark - Extras
+extern asimagenode_modification_block_t ASImageNodeRoundBorderModificationBlock(CGFloat borderWidth, UIColor *borderColor)
+{
+  return ^(UIImage *originalImage) {
+    UIGraphicsBeginImageContextWithOptions(originalImage.size, NO, originalImage.scale);
+    UIBezierPath *roundOutline = [UIBezierPath bezierPathWithOvalInRect:(CGRect){CGPointZero, originalImage.size}];
+
+    // Make the image round
+    [roundOutline addClip];
+
+    // Draw the original image
+    [originalImage drawAtPoint:CGPointZero];
+
+    // Draw a border on top.
+    if (borderWidth > 0.0) {
+      [borderColor setStroke];
+      CGContextSetLineWidth(UIGraphicsGetCurrentContext(), borderWidth);
+      [roundOutline stroke];
+    }
+
+    UIImage *modifiedImage = UIGraphicsGetImageFromCurrentImageContext();
+    UIGraphicsEndImageContext();
+    return modifiedImage;
+  };
+}