Vista - Pivot with ListView using GridView

Hi,

I have an interesting problem at hand. I have a collection of custom objects
which I want to group by a specific property and display in a ListView WPF
control.
This is pretty straightforward with XAML using a CollectionViewSource object
to bind to the ListView, so far so good.
The problem is that I want each group of items to be displayed in its own
column in a GridView. In other words I want to rotate my collection of
objects into columns based on the value of a specific property, like it can
be done using SQL or Excel Pivot tables.

I have tried to apply styles to the GroupItem controls that gets created in
the ListView when binding to a grouped collection but the whole list of items
is always displayed in the same column.

Any ideas of how this could be done?

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Thanks in advance
/Enrico