Trouble adding Message body as HTML

Hi,

I'm trying to add an htm file to an email message as the body but instead I'm getting the results all in black and not properly formatted.

Here is the code:

$msg = new-object Net.Mail.MailMessage
$smtp = new-object Net.Mail.SmtpClient($smtpHost)
$msg.From = $from
$msg.To.Add($Recipient)
$msg.Subject = $Title
$msg.Body = Get-Content $FilePath | Out-String
$msg.IsBodyHTML
$smtp.Send($msg)

Thanks