UWP Listview in Gridview not increasing - xaml

Question

I've got a GridView to display some data. Each of the GridView items is a ListView which is increasing during runtime.
I'd like the GridView to increase as well - but it is only showing a scrollbar inside the GridView item.
One further requirement would be that each GridView Item should be aligned on top of the item.
<GridView ItemsSource="{Binding}" ScrollViewer.VerticalScrollBarVisibility="Disabled" Width="1080">
<GridView.ItemTemplate>
<DataTemplate>
<ListView ItemsSource="{Binding ListData}" HorizontalAlignment="Center">
<ListView.ItemTemplate>
<DataTemplate >
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<TextBlock Text="🎂"
FontSize="20"
Grid.Column="0"
Margin="0,0,10,10"
FontFamily="Sergoe UI"
Style="{StaticResource BasicTextBlock}"/>
<TextBlock Text="{Binding NameString, Converter={StaticResource DataBindingDebugConverter}}"
Grid.Column="2"
Margin="10,0,0,0"
FontSize="16"
Style="{StaticResource BasicTextBlock}"/>
</Grid>
</DataTemplate>
</ListView.ItemTemplate>
<ListView.ItemContainerStyle>
<Style TargetType="ListViewItem">
<Setter Property="Padding" Value="0"/>
<Setter Property="Margin" Value="0,0,0,0"/>
<Setter Property="VerticalContentAlignment" Value="Stretch"/>
</Style>
</ListView.ItemContainerStyle>
</ListView>
</DataTemplate>
</GridView.ItemTemplate>
<GridView.ItemContainerStyle>
<Style TargetType="GridViewItem">
<Setter Property="Padding" Value="0"/>
<Setter Property="Margin" Value="0,20,0,0"/>
<Setter Property="Width" Value="360" />
</Style>
</GridView.ItemContainerStyle>
</GridView>

Answer 1

the correct answer for this question is (based on the hint of JustinXL)
<GridView ItemsSource="{Binding}" ScrollViewer.VerticalScrollBarVisibility="Disabled" Width="1080">
<GridView.ItemTemplate>
<DataTemplate>
<ItemsControl ItemsSource="{Binding ListData, Converter={StaticResource DataBindingDebugConverter}}" x:Name="BirthdayListView" HorizontalAlignment="Center" Margin="0,20,0,0">
<ItemsControl.ItemTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<TextBlock Text="🎂"
FontSize="16"
Grid.Column="0"
Margin="0,0,10,10"
FontFamily="Sergoe UI"
Style="{StaticResource BasicTextBlock}"/>
<TextBlock Text="{Binding NameString, Converter={StaticResource DataBindingDebugConverter}}"
Grid.Column="2"
Margin="10,0,0,0"
FontSize="16"
Style="{StaticResource BasicTextBlock}"/>
</Grid>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</DataTemplate>
</GridView.ItemTemplate>
<GridView.ItemContainerStyle>
<Style TargetType="ContentControl">
<Setter Property="Padding" Value="0"/>
<Setter Property="Margin" Value="0,20,0,0"/>
<Setter Property="Width" Value="360" />
<Setter Property="VerticalContentAlignment" Value="Top" />
</Style>
</GridView.ItemContainerStyle>
</GridView>