Bella Twins, Muscle and Fitness The Bella Twins are cover girls! Nikki Bella and Brie Bella are gracing the cover of October's Muscle & Fitness, marking the first time in 76 years that twin women have been on the magazine's cover. series, Total Bellas. The show premieres on Oct. 5 and will document Brie and her husband Daniel Bryan moving in with Nikki and her longtime boyfriend John Cena to help Nikki while she recovers from neck surgery.