<P> Big Brother 19 is the nineteenth season of the American reality television series Big Brother . It is based upon the Dutch series of the same name . The season premiered on June 28 , 2017 on CBS in the United States with a two - hour season premiere and Julie Chen returning as host . </P>
<P> Big Brother 19 is the nineteenth season of the American reality television series Big Brother . It is based upon the Dutch series of the same name . The season premiered on June 28 , 2017 on CBS in the United States with a two - hour season premiere and Julie Chen returning as host . </P>
when did this season of big brother start
when did this season of big brother start
June 28 , 2017
June 28 , 2017