According to WENN, Jennifer Garner has taken husband Ben Affleck’s last name and become Jennifer Affleck. They cite a donation to Massachusetts gubernatorial hopeful Deval Patrick’s campaign where she signed her name as Jennifer Affleck.
Most likely she is just changing her legal name and not her professional name. When Jennifer was married to Scott Foley, she went by "Jennifer Foley" personally until their divorce.
(I wonder if J.Lo would have done this had she and Ben stayed together.)
Thanks to CBB Reader Angela.