Editors at American magazine W have pitted Angelina Jolie against Jennifer Aniston on two different covers for the publication's November issue.Brad Pitt's girlfriend Jolie and the star's ex-wife Aniston each adorn one of seven celebrity covers of the style magazine.Pop artist Richard Prince designed the magazine's different fronts, taking red-carpet photographs of each star and writing fake autographs on them.An insider at the fashion publication says: "It's a coincidence."