Rihanna Recorded A 'Monster Hook,' And We Just Might Know Who It's For...

YOUNGVIP News takes a few guesses at who gets Rih Rih's vocals.
eight years at the end of 2013, but we do know that she's making music — for one of her "favorite artists."

On Wednesday (September 11), she tweeted, "Just left the studio... Recorded a #monster hook for one of my favorite artists! And that's all I can give you..."

The mysterious tweet — not surprisingly — rallied her Rihanna Navy, who were feverishly guessing who the artist could be. Predictions included Nicki Minaj, A$AP Rocky, and Drake, to name a few. We here at MTV News compiled a list of who we think Rihanna could be collaborating with, and even added some odds for you betting types.
Lady Gaga
Since Rihanna tweeted the word "monster," some automatically assumed she could only be talking about the Mother Monster herself, Lady Gaga. Even though her Little Monsters have heard a majority of the ARTPOP at the iTunes Festival, there may still be some time to add in an extra track, or maybe even a remix to "Sex Dreams," which fans are hoping will be the next single.
Odds: 20 to 1

Kanye West
Another logical person that Rihanna could be working is "Monster" rapper himself, Kanye West. The two were rumored to have met up in New York last month and both were spotted during New York Fashion Week, which could have given them time to talk about a possible collaboration. They've worked together several times in the past, most recently on Rihanna's "Diamonds" remix, so it might be time for her to return the favor on that rumored Yeezus remix EP.
Odds: 15 to 1
Nicki Minaj
Nicki Minaj had a stand-out verse on West's "Monster" track, which made us think that Minaj just might be the artist Rihanna could be working with. Minaj recently Instagrammed a picture of the two at Alexander Wang's New York Fashion Week after-party. Queen Barb, who told MTV News back in April that she was going to begin working on her next album "very very soon," has worked with Rihanna when the two hooked up the single, "Fly" off Minaj's Pink Friday album.
Odds: 5 to 1
Britney Spears
Back in 2011, when Rihanna asked her Navy who she should collaborate with, Britney Spears was a popular choice. The two later made fans' wishes come true when they teamed up on the sexy remix of her hit "S&M," and with Spears gearing up to release new music with her single, "Work Bitch," it seems to be a perfect time for the two to reconnect for Spears' upcoming album.
Odds: 10 to 1
Katy Perry
Katy Perry's album may just be a little over a month away, but that doesn't mean there isn't still some time to squeeze in a collaboration with her best friend, Rihanna, with whom she has never worked. Perry recently played 10 of Prism's songs for critics in New York, but there is still some mystery behind the three tracks that will be featured on the deluxe edition.
Odds: 5 to 1
Of Monsters and Men
We realize the chances of Rihanna collaborating with Of Monsters and Men are extremely slim, but she did tweet out the word, "monster," and who knows, since their debut single, "Little Talks" turned out to be a hit, maybe the indie/folk band are now "one of her favorite artists"?
Odds: 1000 to 1