How to Change Size of Pivot Item Header in Template - xaml

Question

I'm looking to be able to modify the default Pivot template to change the size of the Pivot Item headers. How might I do this with the following Style
<Style x:Key="PivotStyle" TargetType="phone:Pivot">
<Setter Property="Margin" Value="0"/>
<Setter Property="Padding" Value="0"/>
<Setter Property="Foreground" Value="{StaticResource PhoneForegroundBrush}"/>
<Setter Property="Background" Value="Transparent"/>
<Setter Property="ItemsPanel">
<Setter.Value>
<ItemsPanelTemplate>
<Grid/>
</ItemsPanelTemplate>
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="phone:Pivot">
<Grid HorizontalAlignment="{TemplateBinding HorizontalAlignment}"
VerticalAlignment="{TemplateBinding VerticalAlignment}">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid CacheMode="BitmapCache" Grid.RowSpan="2" >
<Grid.Background>
<LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
<GradientStop Color="Transparent" Offset="0.0" />
<GradientStop Color="Transparent" Offset="1.0" />
</LinearGradientBrush>
</Grid.Background>
</Grid>
<Grid Background="{TemplateBinding Background}" CacheMode="BitmapCache" Grid.Row="2" />
<ContentPresenter ContentTemplate="{TemplateBinding TitleTemplate}" Content="{TemplateBinding Title}" Margin="24,17,0,-7" />
<Primitives:PivotHeadersControl x:Name="HeadersListElement" Foreground="{StaticResource PhoneForegroundBrush}" FontSize="28" Grid.Row="1"/>
<ItemsPresenter x:Name="PivotItemPresenter" Margin="{TemplateBinding Padding}" Grid.Row="2"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
I am trying to get this to mimick the following

Answer 1

You can surely change your Pivot Header's font-size, family and so on by changing HeaderTemplate:
<phone:Pivot Title="PivotTest" Style="{StaticResource PivotStyle}">
<phone:Pivot.HeaderTemplate>
<DataTemplate>
<TextBlock Text="{Binding}" FontSize="10"/>
</DataTemplate>
</phone:Pivot.HeaderTemplate>
<phone:PivotItem Header="One">
// item 1
</phone:PivotItem>
<phone:PivotItem Header="Two">
// item 2
</phone:PivotItem>
</phone:Pivot>
EDIT - within a style:
<phone:PhoneApplicationPage.Resources>
<DataTemplate x:Key="myHeader">
<TextBlock Text="{Binding}" FontSize="10"/>
</DataTemplate>
<Style x:Key="PivotStyle" TargetType="phone:Pivot">
<Setter Property="HeaderTemplate" Value="{StaticResource myHeader}"/>
<Setter Property="Margin" Value="0"/>
....