Justin Timberlake had “Trolls.” Rihanna has “Smurfs.” Both films get as much mileage as it can from its singer-voice actor. Rihanna voices Smurfette and supplies a new song, giving a ...

Elsewhere, horror offering 'I know What You Did Last Summer' earned $2.2 million in Thursday previews as it opens this weekend opposite fellow reboot 'Smurfs,' starring Rihanna.