If, like me, you're very much not a teenager anymore but have still developed an intense fixation upon TikTok, know that you're in extremely good company: Jennifer Lopez and Alex Rodriguez are into it, too. And their latest effort might be their best to date: J.Lo recruited her twins, Emme and Max, while A-Rod called on his daughters, Natasha and Ella, to have a stab at the "Something New" challenge.