NameVirtualHost doesn't work

I have namevirtualhost defined but for some reason it's just not working.
I'm using wildcards in the form of XXX.com.site.com and XXX.img.site.com.
It appears only the first virtualhost works. The second one keeps routing
to the document root defined in the first virtualhost
(/www/imgsite/htdocs/com). Wha am I doing wrong here? Does namevirtualhost
not support wildcard subdomains?


NameVirtualHost 1.2.3.4:80

<VirtualHost 1.2.3.4>
ServerName com.site.com
DocumentRoot /www/imgsite/htdocs/com
</VirtualHost>


<VirtualHost 1.2.3.4>
ServerName img.site.com
DocumentRoot /www/imgsite/htdocs
</VirtualHost>