Here we go again, Celebrity endorsement is probably the best way to market a product, and Microsoft is bringing some celebrities like Jessica Alba and Gwen Stefani. The ladies star in the latest Windows Phone 8 ads. Check out the Videos below!

Model and actress Jessica Alba has the red Nokia Lumia 920 and shows how well the phone works for a mom like her with Kid's Corner. Singer Gwen Stefani on the other hand sports a blue HTC Windows Phone 8X and focuses on how it allows her to not just sleep while on the road, but also get stuff done on the device.

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Here is a Short preview video showing the New features of the Windows Phone 7.8 Update on a Nokia LUMIA 900, All current Windows Phone 7/7.5 Mango devices will get this update instead of WP8.

The Video is short and doesn't reveal much details only the major changes, Windows Phone 7.8 is scheduled to arrive in early 2013.

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