Whether you love them or loathe them, the girls of MTV reality shows "The Hills" and "The City" bring some serious drama (and serious fashion) into our Monday nights.

Now, the two shows are moving to Tuesdays, with both series premiering tonight beginning at 10pm ET/PT on MTV.

On "The Hills," the big difference is the absence of former star Lauren Conrad, who has left the show to focus on her fashion line. You can still expect regulars like Stephanie Pratt, Audrina Patridge, and Heidi Montag, as well as Kristin Cavallari, a Laguna Beach acquaintance of the group who joins the cast to shake things up.

On "The City," Whitney Port and rival Olivia Palermo will face off with a new set of fashion frenemies--Erin, Roxy, and Samantha.

Since we are completely entranced by both Heidi Montag's Barbie-like plastic surgery and Olivia Palermo's backstabbing ways at DVF, we'll be watching.

And don't even get us started on Spencer.

To watch Lauren talk about her new fashion line with Kohls, click below: