>> they like to do things themselves so kate will cook meals. occasionally, she'll send the bodyguards out to the grocers to pick something she'd forgot but still pushes the supermarket and the trolley around, cooks the meals for the children. >> katie nicholl, the author of "kate the future queen" is another reason we're obsessed, just wild about harry, william's younger brother, now 31, shed his playboy image and now a philanthropist. >> he's still having huge amounts of fun. just more careful about where he has that fun, and who it's with and most importantly, for him, that he stays off the front pages. >> harry fourth in line for the throne created the invictus games to compete in sports. >> i've served alongside soldiers all over the world. >> watched the challenge from the obamas, let's just call it the royals drop the mike moment.