She’s one of the hottest teen stars in the world, and during a recent interview Miley Cyrus explained that she’s on top of the coolness scale. The “Hannah Montana” babe told “The Morning Mash Up” that she’s not one to get star-struck when she meets celebrities.  “No, I’m pretty cool.  I’m pretty much the coolest person ever.”  She continued, “There are not many things about me that are like a normal teenage girl. But the one normal teenage girl thing is that I think Zac Efron is the hottest person in the world. I really, really like him. And it’s weird… it’s weird because he’s my friend.”“I think also the reason he is so sexy is because he and Vanessa Hudgens have been together since the first ‘High School Musical’ and… I think that’s really cool.”