Jen Selter -- the second most influential fitness star in the world -- has vowed to never fly American Airlines again after an argument with cabin crew got her kicked off a plane

AP Fitness influencer Jennifer Selter, known by some of fans as the "belfie queen," has 11.7 million Instagram followers. She was kicked off a New York-bound American Airlines plane after a row erupted with cabin crew. Instagram star shared a series of videos of the ordeal on Twitter. With 11.7 million Instagram fans, 24-year-old fitness influencer and blogger Jennifer Selter from Long Island has amassed a huge social media following and was recently named the second most influential fitness sta...