Miley Cyrus appeared somber as she headed back to work in her first outing since the death of her godmother, Dolly Parton. The “Flowers” songstress was photographed arriving at a Los Angeles studio to film a forthcoming project on Wednesday afternoon. She kept her head up high, wearing oversized black sunglasses as she made her way inside the building. Cyrus, 33, wore a black T-shirt, jeans and flip-flops for the casual outing, styling her blond hair up in a messy updo. She carried an Erewhon smoothie and was joined by two others. The Grammy winner stepped out hours after addressing Parton’s heartbreaking death via an emotional Instagram…