It's the first ever all-single cast and the most houseguests in "Big Brother" history!

Love is in the air as a new season of the hit reality series "Big Brother" begins tonight on CBS. This year the twist is "'Til Death Do You Part" as the house is packed with single men and women looking to get matched up with their "soul mate".

It's a landmark in "Big Brother" history - kind of "The Bachelor" meets "The Real World!"

Meet the cast: Big Brother returns | www.sheknows.com