theming the user/(uid)/edit page

I was hoping to override the 'page-user-edit.tpl.php' but I can't find it anywhere. Adding the code below on the page.tpl.php

echo '<pre>'; print_r($template_files); echo '</pre>';

returns this(below) which I interpret that there is no such a thing as 'page-user-edit.tpl.php'

Array
(
    [0] => page-user
    [1] => page-user-1
    [2] => page-user-edit
)

My question is, how do I theme the user/(uid)/edit page?

************** here is my template.php*************

/**
 * Custom theme functions
 */
function MYTHEME_theme() {                     
  return array(
    'grid_row' => array(
      'arguments' => array('element' => NULL, 'name' => NULL, 'class' => NULL, 'width' => NULL),
    ),
    'grid_block' => array(
      'arguments' => array('element' => NULL, 'name' => NULL),
    ),
 );
}

Thanks!

C