I like to show LYNC profile picture in sharepoint webpart. It should work in both SP2010 and SP2013, I can have different solution for the version. so if there is different solution that is fine. Simply I just want to get profile picture using sipid. 

thanks.

If not already, you could use active directory to store photos for Lync in the Thumbnail attribute. SharePoint can then use the same photo.

See here - http://blogs.technet.com/b/nexthop/archive/2010/11/22/microsoft-lync-2010-photo-experience.aspx

I use this tool to manage the photos - http://www.codetwo.com/freeware/active-directory-photos/?sts=1872