girls themselves thought was ridiculous. >> jenner was good enough for the first 20 years and now all of a sudden you want to change it? that's not okay for brucethink that jenner is a good enough or it's not - -- >> you can't be a groupie. you can't be bruce jenner's [ bleep ]. sorry. >> i live in a kardashian world. it's kardashian inc in my office. everything i do is, you know, i eat kardashian, i breathe kardashian, i sleep kardashian. i deal in kardashian. so, everyone calls me kris kardashian. so, for one second, i thought, maybe i'll just succumb to the fact that i'm just -- need to be a kardashian for awhile. and of course my entire family shut that down. >> reporter: you were thinking like a manager, you weree thinking business. >> i was thinking business. that was the problem. i wasn't thinking personal and that's when i know i must really need a vacation. >> what does kris do when she's not burning the candle at both ends? >> reporter: there's no vacation or slowing down for jenner, who has managed to advertise the family brand into deems for herself. this is her latest sketcher's commercial, co-starring her daughter kim. did you hav

much to the concern of her children and her husband bruce jenner she ended up keeping jenner, but, youis and they just closed a major deal with sears. stay tuned for that. it is a kardashian world. >> also stay tuned for special edition of "nightline" tomorrow night prime time for "nightline." i love the sitele. >> "mommywood." >> looking forward to that. thanks, lara. hey, robin. >> you two, desperate to get your pearly whites extra white? you're not alone. the american academy of cosmetic dentistry says that's the most requested dental service but some folks get a little carried away when it comes to bleaching their teeth and abc's juju chang, come on, give us a smile is here with more. >> yours are all natural but some people turn to artificial means. think of it like dental dysmorphia. no matter how perfect or pearly white people become obsessed with it and overdo it and sometimes they do it secretly to the extent of doing painful damage to their teeth. ♪ >> reporter: they line the shelves of drugstore, dozens of teeth whitening products from strips to gel trays to mouthwash promis