'Big Brother' 2019 Cast - These 16 Contestants Are Competing on Season 21!

Big Brother is officially back on the air tonight (June 25), and we cannot wait to see these house guests compete this season.

Season 21 will focus on a camping-themed house with 16 contestants taking the spotlight.

PHOTOS: Check out the latest from Big Brother

Julie Chen Moonves will be back to host this new season, which is promising to be great by the looks of this cast.

Big Brother is getting a two night premiere, so tune in tonight and tomorrow (June 26) on CBS to catch all the early drama. Just Jared will also be watching along.

Click through the slideshow to meet all 16 house guests set to compete on Big Brother this season…