If you haven't already heard of Nikki and Brie Bella, also known as WWE's Bella Twins, allow us to fill you in. For starers, they're sisters and can probably kick your ass. They got their first taste of the spotlight when they seized spots as wrestlers on WWE in 2006 (yep, just like The Rock), but have since branched out into the reality-TV world and appeared on E!'s Total Divas, landing them their very own spinoff show called Total Bellas. In honor of their sweet sisterhood — and Brie's recent pregnancy announcement — we've rounded up Nikki and Brie's cutest moments together.