As a two-time and longest reigning Women's champion [1], Nikki Bella knows how to bring the heat on WWE and on social media. When she's not sharing photos of her twin sister Brie [2], the 35-year-old former wrestler is showing off her bikini body (and sometimes even her birthday suit [3]). Whether she's posing poolside or simply taking a bathroom selfie, it's clear that Nikki definitely knows her angles.