creating nested xml using ms sql query

I've a table T1 with following fields: ID,Surname, Name, BirthDate, BirthPlace, DocNumber, IssueDate. I've created xml by

select * from T1
for XML PATH ('Person')

This created me xml with following format

<Person>
   <ID>1</ID>
   <SurName>Ivanov</SurName>
   ...
</Person>
<Person>
...
</Person>
...

This XML contains only one element, which is 'Person', I want to create another element ('Documents') inside this element, similar to:

<Person>
   <ID>1</ID>
   <SurName>Ivanov</SurName>
   ...
   <Documents>
      <DocNumber>1234</DocNumber>
      <IssueDate>'20140101'</IssueDate>
   </Documents>
</Person>
...

How can I do this? Any suggestions? Thanks in advance.