Fashion Fitness of the Day: Jen Selter has the Most Famous Butt on Instagram

Workout Fanatic Jen Selter had no idea her rear end would get so much attention when she first started posting pictures of her exercise routines on Instagram. Now the 20-year-old New Yorker has one of the most famous rumps in the world, building up an impressive following on the social media platform that includes mega-celebrity Rihanna.

When I heard that Rihanna was following me on Instagram, I was the happiest girl," Selter says. "It just shows that if talent is following you, you're doing something right."