How can I make a XAML Trigger call a XAML Style? - wpf

Question

This style correctly fades my toolbar in or out based on the changing of a ViewModel Property:
<Style x:Key="PageToolBarStyle" TargetType="Border">
<Style.Triggers>
<DataTrigger Binding="{Binding PageToolBarVisible}" Value="true">
<DataTrigger.EnterActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation
Storyboard.TargetProperty="Opacity"
From="0.0"
To="1.0"
Duration="0:0:2"/>
</Storyboard>
</BeginStoryboard>
</DataTrigger.EnterActions>
<DataTrigger.ExitActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation
Storyboard.TargetProperty="Opacity"
From="1.0"
To="0.0"
Duration="0:0:2"/>
</Storyboard>
</BeginStoryboard>
</DataTrigger.ExitActions>
</DataTrigger>
<Trigger Property="Opacity" Value="0">
<Setter Property="Visibility" Value="Collapsed"/>
</Trigger>
</Style.Triggers>
</Style>
However, when the application loads the status of the toolbar (faded out or in) is not in sync with the value of the ViewModel property (true or false). So I want to force this style to be executed upon loading the window, what is the syntax to do this, here is pseudo code of what I want to do:
<Window.Triggers>
<EventTrigger RoutedEvent="FrameworkElement.Loaded">
<EventTrigger.Actions>
<!-- PSEUDO-CODE: -->
<ExecuteTriggerStyle StyleToExecute="{StaticResource PageToolBarStyle}"/>
</EventTrigger.Actions>
</EventTrigger>
</Window.Triggers>