Katy puts Hogwarts on the map -- literally.

+ We've seen Katy Perry perform as everything from an Ancient Egyptian goddess to a boxer, and now we can add Australian meteorologist to that list. Katy hit up Channel 7's "Sunrise" on Wednesday morning to deliver the weather forecast, which was adorable yet not always on point -- i.e., "Hobart" gets jumbled into "Hogwarts." (MTV News)

+ Wanna hang out with Little Mix live from MTV on Friday, March 7? It's on! Don't miss "Live From MTV" with Little Mix at littlemix.mtv.com. (MTV News)

+ To celebrate the impending release of Cher Lloyd's Sorry I'm Late (out May 27), the British singer-songwriter is teaming up with MTV to choose some lucky fans to premiere different tracks on the album. Oh, and Cher's next single, "Sirens," debuts on Mar. 14. Yes, all of those words are correct, and yes, you may start flipping your sh** right now. (CherLloyd.com)

+ After being denied a permit to perform in a giant Doritos vending machine at SXSW (yep), Lady Gaga has revealed that she'll be headlining a show at Stubb's in Austin on Mar. 13 as part of the music fest. Watch her announcement video, and learn how to win V.I.P. entry. (MTV News)

+ Holy Mother of Dragons: "Game Of Thrones" is dropping a free mixtape on Friday, cheekily titled Catch The Throne. The set features Common, Big Boi, Wale, and more rapping over beats and samples culled from the show. (Pitchfork)

+ Speaking of Catch The Throne, listen to Big Boi's contribution to the set, "Mother Of Dragons." FYI, "Game Of Thrones" Season 4 premieres on Apr. 6. (Pitchfork)

+ Watch Ed Sheeran cover Beyoncé's "Drunk In Love" during his appearance on Ryan Seacrest's radio show. While he forgot some of the words, we dig Ed's acoustic approach to the tune. (MTV News)

+ ICYMI: Le1f's debut solo EP, Hey, is streaming right now via Pitchfork. The Hangout Fest performer's five-song set drops for real on Mar. 11. (Pitchfork)

+ Sky Ferreira came to Justin Bieber's defense on Twitter yesterday. "Why is Miami Police Department releasing surveillance videos of Justin Bieber's arrest (including his private parts)? What is the point?" she tweeted, adding, "To humiliate him & invade his privacy?" (Billboard)

Photo credit: "Sunrise"/Channel 7