So what do you get the 16-year-old who has everything for her birthday? Miley Cyrus now officially cool dad, Billy Ray Cyrus gave his daughter keys … to her own recording studio! “No, she didn’t want a Mercedes, she wanted a recording studio,” the generous dad told Access Hollywood last night. “She just wanted a place to record there at the house. She’s been writing a lot of songs, a lot of really great material.” Miley won’t be the only one with access to the studio — Dad plans to use it, too. “It’s a great place for us to get up there and work out some tunes and sing,” said Billy Ray. But not if his daughter has anything to say about it. “He’s not touching it! It’s mine,” countered Miley. “No one’s touching it but me. They’ll ruin it.” The singer added, “It’s gonna be dope! I’m so stoked!”