Billie Lourd & Leslie Grossman Arrive on the Set of 'American Horror Story' Season 8!

American Horror Story Season 8 is moving right along!

Co-stars Billie Lourd and Leslie Grossman were both spotted arriving to the set of the show’s upcoming season on Monday (July 9) in Los Angeles.

PHOTOS: Check out the latest pics of Billie Lourd

The hit series returns for its eighth season on September 12, FX confirmed via social media at the end of June.

The forthcoming season is being kept under wraps as always, but we already know that it will involve a crossover of Season 1′s Murder House and Season 3′s Coven, and will include Sarah Paulson, Evan Peters and Kathy Bates.