"I really loved Sarah Lawrence and NYU," says the 17-year-old actress
"She's doing an amazing job right now," says the former boy band star
The hip-hop star, who has a new album out, talks collaborations and clothing lines with PEOPLE
Though, she says of Katy Perry's hit song, "my lips are kind of taken"
"She's a nice break from the chaos," the American Idol champ says of Kimberly Caldwell
The fellow ballplayer understands how hard it can be to keep personal lives private