<P> Kate Emily Pearson ( born August 31 , 1980 ) , portrayed by Chrissy Metz ( current day ) , Hannah Zeile ( age 15 -- 17 ) , and Mackenzie Hancsicsak ( ages 8 -- 10 ) , is Jack and Rebecca 's daughter , and Kevin and Randall 's sister . She is `` Number Two '' of the `` Big Three '' , being the second and last of the surviving triplets to be born . </P>
<P> Kate Emily Pearson ( born August 31 , 1980 ) , portrayed by Chrissy Metz ( current day ) , Hannah Zeile ( age 15 -- 17 ) , and Mackenzie Hancsicsak ( ages 8 -- 10 ) , is Jack and Rebecca 's daughter , and Kevin and Randall 's sister . She is `` Number Two '' of the `` Big Three '' , being the second and last of the surviving triplets to be born . </P>
who plays high school kate in this is us
who plays high school kate in this is us
Hannah Zeile
Hannah Zeile