Credit: Jean Baptiste Lacroix/; Ray Tamarra/Getty Images

After seeing new shots of Brad Pitt on a Wednesday dinner date with Angelina Jolie, it's hard to believe that just two years ago the actor -- looking dapper than ever at the 2007 premiere of The Assassination of Jesse James (left) -- had female fans' hearts pounding.

These days, his heartthrob status is slipping, according to readers.

marking a transition or marking a new stage in his career," says Dr. Alan Peterkin, psychiatrist and author of One Thousand Beards: A Cultural History of Facial Hair, told Us last November.

The actor - who has frequently sported crazy beards throughout his career -- also may be "tired of being a part of one of the most beautiful couples in the world. He wants to try a new look," Peterkin said.