add_action( 'woocommerce_after_shop_loop_item_title', function () {
    if(is_product_category('t-shirts')) {
        $thumb = get_the_post_thumbnail( the_ID());
        if(is_string($thumb) ) {
            echo '<div class="imagewrapper">' . $thumb;
        }
    }

}, 9 );
add_action( 'woocommerce_after_shop_loop_item_title', function () {
    if(is_product_category('t-shirts')) {
        $thumb = get_the_post_thumbnail( the_ID());
        if(is_string($thumb) ) {
            echo '</div>';
        }
    }
}, 11 );