Kelly Osbourne's brand new advertisement campaign for the 'Material Girl' fashion line has been unveiled and shows the star looking fantastic and every inch the embodiment of the brand. 

She tweeted earlier today, February 23:

"My @MaterialGirlCol Ads are out! Check them out! Tweet me when you see them at @Macys! Which is your favorite?"

Material Girl belongs to Madonna and her daughter Lourdes, also known as Lola, and Kelly Obsourne is helping to promote the Spring 2011 collection. Osbourne said of the brand:

"Material Girl is a brand for any woman and every woman. It's affordable to everyone, it makes you feel special when you wear it. It's edgy but at the same time it's classic."

Watch the behind the scenes video, which also includes interviews with both Kelly and Lourdes, from the recent shoot below: