diff --git a/includes/sanitizers/class-amp-img-sanitizer.php b/includes/sanitizers/class-amp-img-sanitizer.php
index b562a5bf908..c4ce753e768 100644
--- a/includes/sanitizers/class-amp-img-sanitizer.php
+++ b/includes/sanitizers/class-amp-img-sanitizer.php
@@ -275,8 +275,6 @@ private function adjust_and_replace_node( $node ) {
 		$noscript = $this->dom->createElement( 'noscript' );
 		$noscript->appendChild( $node );
 		$img_node->appendChild( $noscript );
-
-		$this->add_auto_width_to_figure( $img_node );
 	}
 
 	/**
@@ -320,37 +318,4 @@ private function is_gif_url( $url ) {
 		$path = wp_parse_url( $url, PHP_URL_PATH );
 		return substr( $path, -strlen( $ext ) ) === $ext;
 	}
-
-	/**
-	 * Add an inline style to set the `<figure>` element's width to `auto` instead of `fit-content`.
-	 *
-	 * @since 1.0
-	 * @see https://github.com/ampproject/amp-wp/issues/1086
-	 *
-	 * @param DOMElement $node The DOMNode to adjust and replace.
-	 */
-	protected function add_auto_width_to_figure( $node ) {
-		$figure = $node->parentNode;
-		if ( ! ( $figure instanceof DOMElement ) || 'figure' !== $figure->tagName ) {
-			return;
-		}
-
-		$class = $figure->getAttribute( 'class' );
-		// Target only the <figure> with a 'wp-block-image' class attribute.
-		if ( false === strpos( $class, 'wp-block-image' ) ) {
-			return;
-		}
-
-		// Target only <figure> without a 'is-resized' class attribute.
-		if ( false !== strpos( $class, 'is-resized' ) ) {
-			return;
-		}
-
-		$new_style = 'width: auto;';
-		if ( $figure->hasAttribute( 'style' ) ) {
-			$figure->setAttribute( 'style', $new_style . $figure->getAttribute( 'style' ) );
-		} else {
-			$figure->setAttribute( 'style', $new_style );
-		}
-	}
 }
diff --git a/tests/test-amp-img-sanitizer.php b/tests/test-amp-img-sanitizer.php
index e77274c1457..d8d103a4b82 100644
--- a/tests/test-amp-img-sanitizer.php
+++ b/tests/test-amp-img-sanitizer.php
@@ -187,22 +187,22 @@ public function get_data() {
 
 			'wide_image'                               => array(
 				'<figure class="wp-block-image"><img src="http://placehold.it/580x300" alt="Image Alignment 580x300" class="wp-image-967" /></figure>',
-				'<figure class="wp-block-image" style="width: auto;"><amp-img src="http://placehold.it/580x300" alt="Image Alignment 580x300" class="wp-image-967 amp-wp-enforced-sizes" width="580" height="300" layout="intrinsic"><noscript><img src="http://placehold.it/580x300" alt="Image Alignment 580x300" class="wp-image-967" width="580" height="300"></noscript></amp-img></figure>',
+				'<figure class="wp-block-image"><amp-img src="http://placehold.it/580x300" alt="Image Alignment 580x300" class="wp-image-967 amp-wp-enforced-sizes" width="580" height="300" layout="intrinsic"><noscript><img src="http://placehold.it/580x300" alt="Image Alignment 580x300" class="wp-image-967" width="580" height="300"></noscript></amp-img></figure>',
 			),
 
 			'wide_image_center_aligned'                => array(
 				'<figure class="wp-block-image aligncenter"><img src="http://placehold.it/580x300" alt="Image Alignment 580x300" class="wp-image-967" /></figure>',
-				'<figure class="wp-block-image aligncenter" style="width: auto;"><amp-img src="http://placehold.it/580x300" alt="Image Alignment 580x300" class="wp-image-967 amp-wp-enforced-sizes" width="580" height="300" layout="intrinsic"><noscript><img src="http://placehold.it/580x300" alt="Image Alignment 580x300" class="wp-image-967" width="580" height="300"></noscript></amp-img></figure>',
+				'<figure class="wp-block-image aligncenter"><amp-img src="http://placehold.it/580x300" alt="Image Alignment 580x300" class="wp-image-967 amp-wp-enforced-sizes" width="580" height="300" layout="intrinsic"><noscript><img src="http://placehold.it/580x300" alt="Image Alignment 580x300" class="wp-image-967" width="580" height="300"></noscript></amp-img></figure>',
 			),
 
 			'wide_image_left_aligned_custom_style'     => array(
 				'<figure class="wp-block-image alignleft" style="border:solid 1px red;"><img src="http://placehold.it/580x300" alt="Image Alignment 580x300" class="wp-image-967" /></figure>',
-				'<figure class="wp-block-image alignleft" style="width: auto;border:solid 1px red;"><amp-img src="http://placehold.it/580x300" alt="Image Alignment 580x300" class="wp-image-967 amp-wp-enforced-sizes" width="580" height="300" layout="intrinsic"><noscript><img src="http://placehold.it/580x300" alt="Image Alignment 580x300" class="wp-image-967" width="580" height="300"></noscript></amp-img></figure>',
+				'<figure class="wp-block-image alignleft" style="border:solid 1px red;"><amp-img src="http://placehold.it/580x300" alt="Image Alignment 580x300" class="wp-image-967 amp-wp-enforced-sizes" width="580" height="300" layout="intrinsic"><noscript><img src="http://placehold.it/580x300" alt="Image Alignment 580x300" class="wp-image-967" width="580" height="300"></noscript></amp-img></figure>',
 			),
 
 			'wide_image_right_aligned'                 => array(
 				'<figure class="wp-block-image alignright"><img src="http://placehold.it/580x300" alt="Image Alignment 580x300" class="wp-image-967" /></figure>',
-				'<figure class="wp-block-image alignright" style="width: auto;"><amp-img src="http://placehold.it/580x300" alt="Image Alignment 580x300" class="wp-image-967 amp-wp-enforced-sizes" width="580" height="300" layout="intrinsic"><noscript><img src="http://placehold.it/580x300" alt="Image Alignment 580x300" class="wp-image-967" width="580" height="300"></noscript></amp-img></figure>',
+				'<figure class="wp-block-image alignright"><amp-img src="http://placehold.it/580x300" alt="Image Alignment 580x300" class="wp-image-967 amp-wp-enforced-sizes" width="580" height="300" layout="intrinsic"><noscript><img src="http://placehold.it/580x300" alt="Image Alignment 580x300" class="wp-image-967" width="580" height="300"></noscript></amp-img></figure>',
 			),
 
 			'wide_image_is_resized'                    => array(