CBS’s summer reality series “Big Brother 7: All-Stars” and “Rock Star: Supernova” will come to their conclusions on two consecutive nights in September.

The winner of “Big Brother” will be revealed live Tuesday, Sept. 12, at 8 p.m. (ET; tape-delayed on the West Coast). The winner of “Big Brother” will go home with a $500,000 grand prize.

“Rock Star” will have its finale Wednesday, Sept. 13, at 8 p.m., when Tommy Lee, Gilby Clarke and Jason Newsted choose the lead singer of their new rock band Supernova.

The winner will record an original CD with Supernova that will be released in the fall, before the band embarks on a world tour in early 2007.