Sienna Miller said she felt “slightly concerned” after her 14-year-old daughter, Marlowe, made an unexpected red carpet appearance at the “War” premiere in London last Wednesday. “Marlowe didn’t actually walk the red carpet with me. She came with her friend. My mom was also there,” the actress clarified on SiriusXM’s “The Julia Cunningham Show” this week. “It was five seconds at the end where she, like, came to give me a hug and totally mogged me,” she added. Miller, 44, explained she has some “regret” about the situation because both she and Marlowe “didn’t expect” the public’s reaction to the stunning teenager. “I think I’m going to be…









