select for xml, nest on order by fields

Question

SELECT 
      [Represantative] 
      ,[log_date] 
      ,[customer] 
      ,[type] 
      ,[log_type] 
      ,[zone_code] 
  FROM [dbo].[ilc_ziyaret_plani_gun_degisiklikleri_v] gun_logu
order by Represantative, log_date, customer
for xml path ,  root('log_details')

I need the xml nested as in the order by clause: I tried using for xml path clause, but it did not do the nesting, it just shaped the xml doc. Represantative, log_date, customer

<log_details>
 <represantative name="john doe">
  <log_date date="2010-02-10">
   <customer c="xyz">
    <op>
      <log_type="add"/>
      <zone_code="a1"/>
    </op>
    <op>
      <log_type="add"/>
      <zone_code="b1"/>
    </op>
   <customer/>
   <customer> same as above </customer>
  <log_date>same for next date</log_date>

any idea how to do this