diff --git a/core/modules/field/lib/Drupal/field/FieldInstanceInterface.php b/core/modules/field/lib/Drupal/field/FieldInstanceInterface.php
new file mode 100644
index 0000000..38762a7
--- /dev/null
+++ b/core/modules/field/lib/Drupal/field/FieldInstanceInterface.php
@@ -0,0 +1,17 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\field\FieldInstanceInterface.
+ */
+
+interface FieldInstanceInterface {
+
+  /**
+   * Returns the field entity for this field instance.
+   *
+   * @return \Drupal\field\Plugin\Core\Entity\Field.php
+   *   The field entity for this instance.
+   */
+  public function getField();
+}
diff --git a/core/modules/field/lib/Drupal/field/Plugin/Core/Entity/FieldInstance.php b/core/modules/field/lib/Drupal/field/Plugin/Core/Entity/FieldInstance.php
index 9db2f3d..9f11c5e 100644
--- a/core/modules/field/lib/Drupal/field/Plugin/Core/Entity/FieldInstance.php
+++ b/core/modules/field/lib/Drupal/field/Plugin/Core/Entity/FieldInstance.php
@@ -11,6 +11,7 @@
 use Drupal\Core\Annotation\Translation;
 use Drupal\Core\Config\Entity\ConfigEntityBase;
 use Drupal\field\FieldException;
+use Drupal\field\FieldInstanceInterface;
 
 /**
  * Defines the Field instance entity.
@@ -28,7 +29,7 @@
  *   }
  * )
  */
-class FieldInstance extends ConfigEntityBase implements \ArrayAccess {
+class FieldInstance extends ConfigEntityBase implements \ArrayAccess, FieldInstanceInterface {
 
   /**
    * The instance ID (machine name).
@@ -51,6 +52,13 @@ class FieldInstance extends ConfigEntityBase implements \ArrayAccess {
   public $uuid;
 
   /**
+   * The field to which this instance belongs.
+   *
+   * @var \Drupal\field\Plugin\Core\Entity\Field
+   */
+
+
+  /**
    * The UUID of the field attached to the bundle by this instance.
    *
    * @var string
@@ -239,9 +247,9 @@ public function __construct(array $values, $entity_type = 'field_instance') {
     // Accept incoming 'field_name' instead of 'field_uuid', for easier DX on
     // creation of new instances.
     if (isset($values['field_name']) && !isset($values['field_uuid'])) {
-      $field = field_info_field($values['field_name']);
-      if ($field) {
-        $values['field_uuid'] = $field->uuid;
+      $this->field = field_info_field($values['field_name']);
+      if ($this->field) {
+        $values['field_uuid'] = $this->field->uuid;
       }
       else {
         throw new FieldException(format_string('Attempt to create an instance of unknown, disabled, or deleted field @name', array('@name' => $values['field_name'])));
@@ -251,9 +259,9 @@ public function __construct(array $values, $entity_type = 'field_instance') {
     // @todo Revisit that in favor of a getField() method.
     //   See http://drupal.org/node/1967106.
     elseif (isset($values['field_uuid']) && !isset($values['field_name'])) {
-      $field = current(field_read_fields(array('uuid' => $values['field_uuid']), array('include_inactive' => TRUE, 'include_deleted' => TRUE)));
-      if ($field) {
-        $values['field_name'] = $field->id;
+      $this->field = current(field_read_fields(array('uuid' => $values['field_uuid']), array('include_inactive' => TRUE, 'include_deleted' => TRUE)));
+      if ($this->field) {
+        $values['field_name'] = $this->field->id;
       }
       else {
         throw new FieldException(format_string('Attempt to create an instance of unknown field @uuid', array('@uuid' => $values['field_uuid'])));
@@ -318,17 +326,14 @@ public function getExportProperties() {
   public function save() {
     $module_handler = \Drupal::moduleHandler();
     $entity_manager = \Drupal::service('plugin.manager.entity');
-    $field_controller = $entity_manager->getStorageController('field_entity');
     $instance_controller = $entity_manager->getStorageController($this->entityType);
 
-    $field = current($field_controller->load(array($this->field_name)));
-
     if ($this->isNew()) {
-      if (empty($field)) {
+      if (empty($this->field)) {
         throw new FieldException(format_string("Attempt to save an instance of a field @field_id that doesn't exist or is currently inactive.", array('@field_name' => $this->field_name)));
       }
       // Check that the field can be attached to this entity type.
-      if (!empty($field->entity_types) && !in_array($this->entity_type, $field->entity_types)) {
+      if (!empty($this->field->entity_types) && !in_array($this->entity_type, $this->field->entity_types)) {
         throw new FieldException(format_string('Attempt to create an instance of field @field_name on forbidden entity type @entity_type.', array('@field_name' => $this->field_name, '@entity_type' => $this->entity_type)));
       }
 
@@ -341,7 +346,7 @@ public function save() {
       }
 
       // Set the field UUID.
-      $this->field_uuid = $field->uuid;
+      $this->field_uuid = $this->field->uuid;
 
       $hook = 'field_create_instance';
       $hook_args = array($this);
@@ -367,7 +372,7 @@ public function save() {
       $hook_args = array($this, $original);
     }
 
-    $field_type_info = field_info_field_types($field->type);
+    $field_type_info = field_info_field_types($this->field->type);
 
     // Set the default instance settings.
     $this->settings += $field_type_info['instance_settings'];
@@ -429,16 +434,15 @@ public function delete($field_cleanup = TRUE) {
 
       // Mark instance data for deletion by invoking
       // hook_field_storage_delete_instance().
-      $field = field_info_field($this->field_name);
-      $module_handler->invoke($field->storage['module'], 'field_storage_delete_instance', array($this));
+      $module_handler->invoke($this->field->storage['module'], 'field_storage_delete_instance', array($this));
 
       // Let modules react to the deletion of the instance with
       // hook_field_delete_instance().
       $module_handler->invokeAll('field_delete_instance', array($this));
 
       // Delete the field itself if we just deleted its last instance.
-      if ($field_cleanup && count($field->getBundles()) == 0) {
-        $field->delete();
+      if ($field_cleanup && count($this->field->getBundles()) == 0) {
+        $this->field->delete();
       }
     }
   }
@@ -524,5 +528,11 @@ public function offsetUnset($offset) {
     unset($this->{$offset});
   }
 
-}
+  /**
+   * {@inheritdoc}
+   */
+  public function getField() {
+    return $this->field;
+  }
 
+}