At 23, Selena Gomez has held down a career for longer than a lot of full-fledged adults -- and, not to rub it in, one that has been far more successful. Despite having worked since childhood -- she landed a Barney & Friends in 2002, role at the age of 10 -- the former Disney star says, "I still feel like I'm the girl from Texas. My mom would still be mad if I didn't say 'please' and 'thank you.'"
But in 2015, Gomez set out to show how much she has grown up. With her second solo album, Revival (which debuted at No. 1 on the Billboard 200 in October), the singer-actor introduced an increasingly mature style -- from steamy first single "Good for You" (featuring A$AP Rocky) to her choice to pose nearly nude for the cover art. Also, this year, Gomez went public about her battle with lupus in Billboard's cover story. It all fits the theme: At the core, Revival is about being true to yourself, even when that means raw exposure. "Strength represents a vulnerability," she says. "This was the first time I was able to really trust myself and go with my gut."