Photographer Mark Liddell has spent the past 10 years capturing Hollywood's A-List with his camera. Not only has he photographed everyone from Jessica Alba to Sharon Stone to Halle Berry, his work has also been published on over 300 magazine covers such as Vogue, Us Weekly and Harper's Bazaar. While eagerly awaiting the release of his book, 'Exposed,' Liddell chatted with PopEater to share what it's like to work with the stars while also working for a good cause.