Gail Tifford has been named chief brand officer of Weight Watchers International, Inc. Tifford joins Weight Watchers from Unilever P.L.C., where she was vice president of media, North America, and global digital media innovation. At Unilever, she introduced a digital disruption roadmap to establish a global vision and strategy for digital media innovation across social commerce, augmented reality, A.I. and blockchain.