You might be aware that the Windows Phone 7 has an integrate Facebook App which you can see in the people hib or the pictures hub . But , if you still prefer an seperate facebook App , then here’s one .

Here’s an App in the Windows Phone 7 Marketplace for facebook access .  It is a dedicated Facebook App for Windows Phone 7 .

The App is published by Microsoft , so you might find the App blending nicely with the Windows Phone 7 .

The Current Version of the App is 1.5.0.0 and is free of cost which is available in the following languages Deutsch, English, Español, Français, Italiano .
Here’s the publisher description

Facebook for Windows Phone makes it easy to stay connected and share information with friends. You can post status updates, check your news feed, review your upcoming events, manage your inbox, upload photos, publish notes, accept friend requests, and look at your friends’ photos, walls and info.

For release notes and application status, please check http://on.fb.me/fbwp7Home

Download the App Below