"Big Brother" is back tonight on CBS with Season 15. 

The host for the reality series will again this season be Julie Chen.

Chen and her co-hosts from her show "The Talk" got to check out the new "Big Brother" house, spent some time there and taped a preview special, which aired on "The Talk" on Wednesday afternoon.

"This is our fifteenth season, so we had to freshen [the house] up even more," Chen said while giving a tour of the house.

The house's updates had a very retro feel to it. "We're calling it mid-century chic," Chen said.

This season (Season 15) will have two new surprises. 

First is that 3 contestants each week will be nominated for eviction compared to 2 per week in seasons past. 

The second is the new role that the viewing audience at home will have in this season. Viewers can vote for their favorite contestant and for who is doing the best job each week for a "Big Brother MVP". This will give that contestant a secret power, which will be further explained when the show airs. 

You can join in the "Big Brother" discussion on twitter with hastag #BB15.  

Season 15 of "Big Brother" premieres tonight at 8pm EST on CBS.  

Read more about all the contestants at the "Big Brother" official website