WWE Hall of Famer Nikki Bella teased her fans with a mini "booty dance" as she showed off her derriere during a toning session in a beauty salon.The Total Bellas star stripped down to a black bra top and a matching colour thong for the beauty treatment to tighten the muscles around her bum.Sharing the clip on Instagram, the 37-year-old lies down on a bench where a technician straps the machine onto her backside.The machine is aimed at eliminating the excess fat around the area and build more muscles using radio frequency and high-intensity electromagnetic energies.As the machine is programmed to a different setting, it bounces on Nikki's booty with a rhythmic beat.The mum-of-one shows her fans how it makes her bum regain a fuller shape,.
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