Buzz Bites (8/21/13): Britney Spears Teases Her Sia Collaboration On Twitter

Britney Spears teases her Sia collaboration!

We can't wait to hear Brit's upcoming collab with Sia!

+ Britney Spears is getting us PUMPED for her upcoming eighth studio album. First, she shared a vague "Album 8 Recipe" visual on Facebook, and then Brit installed a countdown clock for her "All Eyes On Me" single on her site. Now, she's revealed a collab with Sia (who wrote Rihanna's smash hit "Diamonds"), tweeting, "One of the most beautiful songs I have recorded in a LONG time. (Idolator)

Taylor Swift gave tourmate Ed Sheeran jars of homemade jam, one of which bore a not-so-subtle Kanye West reference on its label: "Yo Ed, I'm really happy 4 you and I'm gonna let you finish but this is the best JAM OF ALL TIME." (MTV News)

+ Speaking of Ed Sheeran, the adorbz ginger has joined the cast of "The Voice" as a mentor for Christina Aguilera's team, and he's headlining his own show at Madison Square Garden on Nov. 1. "My dad always said you haven't made it til you've played MSG so it's a massive honour," he tweeted. (E!)

+ Watch the full-length commercial for Katy Perry's new fragrance, Killer Queen. Not to give too much away, but she's pretty dynamite with a laser beam -- metaphorically speaking. Bonus: Check out some behind-the-scenes photos from the set. (MTV Style)

+ Hear Juicy J's "The Woods" featuring Justin Timberlake from the rapper's Stay Trippy, which comes out on Aug. 27. Other featured artists on the album will include Lil Wayne, A$AP Rocky, 2 Chainz, and more. (Rap-Up)

+ Listen to M.I.A.'s "Unbreak My Mixtape," which features a sample from Blur's "Tender." The Brit's eagerly anticipated fourth studio album, Matangi, drops on Nov. 5. (Pitchfork)

Photo credit: Getty Images