Are you ready to Witness Katy Perry like never before?

In celebration of the pop star's (official) fourth album, which released June 9, Perry is live streaming the entire weekend from a special Big Brother-esque house somewhere in Los Angeles.

Starting Thursday, the artist launched a 96-hour live stream —yes, including her sleeping through the night — to air through Monday, where she'll be participating in a number of fun activities, hanging out with other celebrities and special guests and even performing songs from the new record in studio.

Already, Perry has cooked lunch with Gordon Ramsay, contemplated the universe with Neil deGrasse Tyson and had her makeup applied (or rather, her "face beat") by YouTube star Laura Lee GLAM.

But there's plenty more to come! The singer is set to host America Ferrera, Gigi Gorgeous, Sia, James Corden and many others through the whimsical weekend. See the full lineup, below, and Witness some highlights from the live stream for yourself.

Jesse Tyler Ferguson – joining a yoga session with Katy on Friday at 12:30pm PST
Gordon Ramsay – battling it out with Katy in a "Side By Side Challenge" on Friday at 3:00pm PST
Neil deGrasse Tyson - joining Katy for a science conversation at 6:30pm PST
Sia, Mia Moretti, Dita Von Teese – sitting with Katy and other empowering females for a ‘Rose & Thorn’ on Friday at 8:30pm PST
Arianna Huffington – podcast chatting with Katy on Saturday at 3:30pm PST
America Ferrera – having a “moment” with a top celebrity chef Roy Choi for her organization, Harness, followed by co-hosting a dinner with Katy for Gavin Grimm and other special guests on Saturday at 7:30pm PST
James Corden – they’ll be all over the house singing, laughing, eating on Sunday at 10am PST
RuPaul – chit chat over lite bites with Katy on Sunday at 1pm PST
Michael Ian Black – whose podcast is "How To Be Amazing with Michael Ian Black," will be chatting with Katy on Sunday at 5pm PST
Kacey Musgraves – Kacey and Katy will teach fans how to play Kacey’s “Follow Your Arrow” at Sunday at 6pm PST; they will also do a moment for MusiCares
Gigi Gorgeous – discussing her YouTube Red documentary This is Everything: Gigi Gorgeous with Katy on Sunday at 10pm PST

Watch her performances:

Katy Perry's Best Live Vocals:

Katy Perry's Colorful Album Art:

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