Ever since Gomez and Justin Bieber went public at the Oscars about their romance, pop’s hottest young couple has been making headlines. The Mexican-American singer’s third album is missing a guest duet with boyfriend Biebs, but boasts heavyweight producer Dr. Luke, who helps the 18-year-old tackle Britney Spears’s edgy “Whiplash” and cover Katy Perry’s cheeky “That’s More Like It.” Judging by the sophisticated pop sound of empowerment anthems like “Who Says,” young Gomez is growing up fast.