10 Things To Know Now: Justin Bieber Turns 80, Lady Gaga Disses Christina Aguilera + Kanye West And Taylor Swift Mashup

Justin Bieber gets drawn as an old man, see if Lady Gaga really dissed Christina Aguilera, and more!

1.) Check out this forensic artist's interpretation of what Justin Bieber and One Direction will look like as 80-year-olds! We could be wrong here, but even as elderly men, they're still bona fide hunks. (BuzzFeed)

2.) First it was Madonna and Lady Gaga, and now rumor has it that Mother Monster took a jab at Christina Aguilera. Can't all y'all divas just get along? (Popdust)

3.) Check out No Pets Allowed's mashup, "We Are Never Ever Coming Home Again," which combines Kanye West's "Homecoming" and Taylor Swift's "We Are Never Ever Getting Back Together" into one EPIC smash. (Pop On And On)

4.) Demi Lovato is, like, the sweetest person EVER! That's why we were super surprised that she called Simon Cowell an a**hole on "Conan." Hey, someone had to tell him -- J/K! (Kinda.) (Idolator)

Check out the rest of this week's 10 Things To Know Now after the jump!

5.) OMFG, a mashup of Psy's "Gangam Style" and Carly Rae Jepsen's "Call Me Maybe" officially exists! HOW DID THE INTERNET NOT BLOW UP WITH THIS MADNESS?! (Mashable)

6.) If you're still glowing from Ellie Goulding's "Lights," listen to her chat about new tracks "My Blood" and "Halycon" off her upcoming LP, Halycon, which drops Oct. 9. (Arjran Writes)

7.) Brandy's new album, Two Eleven, doesn't drop until Oct. 16, but sneak a listen of two new tracks, "Too Late" and "Paint This House," she teased on a recent radio show. Girl sounds flawless, per usual. (That Grape Juice)

8.) PAH-RAISE technology! Green Day's new album, ¡Uno!, doesn't hit stores until Sept. 23, but the first installment of the forthcoming trilogy is currently streaming FOR FREE on Facebook until then. (Entertainment Weekly)

9. ) Ke$ha's never EVER (EVER!) been the shy type, but girl is being all kinds of mysterious on her Instagram lately. What does it all mean!? (MTV News)

10.) Ballad dominator and "Glee" star Lea Michele tweeted the news that she's prepping her debut album! We just have one question: Um, what took so long? (MTV News)

Photo credit: Getty Images/PictureGroup

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