when you say to yourself, babs costello's got millions of followers, what's that mean to you? sappoint them. >> a million kids? >> like your family, you don't want to let your kids down. >> reporter: babs part of a growing trend of glance influe grand influenzaers online. to grannies that can lift their own body weight. >> i'll show you a few more exercises. >> we have a tendency to put older people on a shelf. i think older people have so much to offer. just their wisdom. >> reporter: babs has been a nurturer her whole life. she ran a preschool for decades. >> these are a lot of grandkids. >> reporter: a mom of four, a grandma of eight. >> here are my parents. >> reporter: up until recently, happily retired. spending her days alongside her husband of 53 years. becoming a social media star was something babs never expected. but that all changed at the start of the pandemic when she started helping her daughter, liz, care for her kids. >> a few years ago i was not on any social media whatsoever. one afternoon when the boys were napping, she said, "mom, i think you should try tik

just like me, everybody, and you know what, look who is here to help us make them, it is babs, babs costellos." babs, welcome to "gma." >> oh, my goodness, michael, it's a pleasure to be here. >> yes, i couldn't have anyone better to show me how to make these chocolate chip cookies. we'll get started because i cannot wait to eat some of these cookies. it all begins with butter. >> with butter. >> you melt most of the butter. how do you do that? >> so we're going to brown the butter. even more than melt and we have already started browning this butter and it's going to give our cookies such a rich deep flavor, but, you know, we start with room temperature butter but if you forgot to put the butter out. >> like i would do that. >> exactly. we all do, right. what you could do is you take a glass, fill it with really hot water, pour the water out, put it over your stick of butter, wait five minutes, you're going to have room temperature butter. >> that's it? all that time i've been messing around. okay. >> don't put it in the microwave, by the way. >> i've done that too. okay, let's start mixing

. >> joining us now is barbara "babs" costello. morning she has got ideas to help us celebrate new year's eve in style babs, merry christmas, happy new year all good things to you. >> same to you this is fabulous >> did you have any idea that your channels would blow up the way they have? >> not in a million years. but here we are. life is a surprise. >> what is your new year's like? >> i like to be in pajamas early, new year's eve. now, these are not what i usually sleep in but they are pajamas. >> festive. >> they are festive for the occasion so my idea for new year's eve truly is to low key it have it stress free. invite people over, have a theme, have a pajama party they could come in fancy ones or they could come in flannels or sweats, whatever if you set the tone, people relax. it will be fun. >> one of the challenges, obviously, if you are hosting, the food and the celebration, but also, simply the playlist. to you have any strategies for that >> another fun thing, peter, is on the hour, let's say the party starts at six --