Gwyneth Paltrow joined a friend for a walk in London earlier this morning with a bright red poppy for Remembrance Day in her hair. She looked chipper despite the recent rumors that her husband Chris Martin was spotted making out with Kate Bosworth, but Gwyneth has other developments to make her smile. She's just signed on to replace Charlize Theron in The Danish Girl, in which she'll star as the wife of Nicole Kidman's transsexual character.