Elizabeth Olsen is taking on a new role: motherhood. The actress has apparently given birth to her and husband Robbie Arnett’s first child, as they were spotted in new photos taking a walk in Los Angeles on Saturday — with the “WandaVision” actress carrying an infant in a white baby carrier strapped to her chest. Olsen, wearing white, donned a wide-brimmed hat during the outing, shielding the baby with another green hat. Arnett, meanwhile, wore a casual pair of shorts, a turquoise long-sleeved shirt and sneakers for the walk. Prior to the sighting, Olsen was spotted stepping out on Aug. 7 in Southern California — with no baby bump in sight…









