Wondering what Katy Perry's new music video for "E.T." will look like? Well, fans still might be wondering after they check out the clip Perry shared Monday (March 21), but at least they'll know what this extraterrestrial's spacecraft looks like.

She tweeted a teaser to the video, which will feature a cameo from Kanye West, who drops a few bars on the song. Her message on the tweet simply reads: "EXTRATRESSTRIALS ARE COMING." n the 19-second teaser, an orb-shaped UFO drops from the sky. Then the clip, which features the booming opening beats of the spacey dance track, tells fans the video will be "Landing March 31."

This is the second look Perry has shared with fans from the video, steered by Floria Sigismondi, who has directed videos for Christina Aguilera, Marilyn Manson and the White Stripes, and directed Kristen Stewart in "The Runaways."

In the previously released photo, West appears in street clothes while Perry is dressed up perhaps as the alien character she sings about in the song, complete with pastel-colored makeup and a giant braided headpiece. In fact, the look harks back to some of the costumes former Sigismondi collaborator Björk has worn.

The song will be the fourth single off Perry's Teenage Dream album, released last year. She made it clear at the time that she wanted the videos for the album to be a spectacle.

"I'm looking forward to making music videos on this new album," she explained. "There's a story to the songs. ... I'm really excited about ... making those music videos that are going to be larger than life."