Need To Know: Austin Mahone Celebrates 18 With An Album Announcement

Today's top stories include Lady Gaga's MTV Takeover and David Letterman's late night retirement.

Austin Mahone Celebrates 18 With Album Announcement

Mahone is back in the studio with Bieber, sharing pics and making everyone freak out. In their spare time, the two are donning matching leather pants to shoot hoops. Because fashun. And on Friday morning, the "Mmm Yeah" singer, who turns 18 today, finally announced that his debut album, The Secret, will drop May 27 and follow with a nationwide tour that kicks off July 25.

Lady Gaga Is Taking Over MTV

Mother Monster is offering an unprecedented peek into her private life, including behind-the-scenes access to her Roseland show rehearsals, an exclusive tour of her Manhattan apartment and a look at some of her collection of fan art. Stay tuned to MTV all day to see Gaga pop in to share stories and secrets and check out her MTV Artist page for updates throughout the day.

David Letterman Says Goodnight

First it was Leno. Now, Letterman. The legendary late night host announced his pending retirement on Thursday's show. Who will replace him? Chelsea Handler is leaving E!, so she's free. Could we convince Amy Poehler? Or Tina Fey? Or BOTH? Notice a pattern here? We're pulling for a late night woman host. Tweet us your suggests @MTVNews.

Got Plans This Weekend? Now You Do!

Marvel freaks - the day has finally come! "Captain America: The Winter Soldier" is here. A benefit of our job? We got to see it early. And, spoiler alert: it's AWESOME. Go see it. That's an order, Captain. Tomorrow, Anna Kendrick and Pharrell Williams will light up the "Saturday Night Live" stage and on Sunday, Winter is coming (or, rather, not going anywhere for us New Yorkers) when season four of "Game of Thrones" kicks off on HBO.

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