How can I get customer details from an order in WooCommerce?

Question

I have a function that does this:

$order = new WC_Order($order_id);
$customer = new WC_Customer($order_id);

How can I get customer details fr

Answer 1

$customer_id = get_current_user_id();
print get_user_meta( $customer_id, 'billing_first_name', true );