Fox has ordered an additional five episodes of “Star.”

The pick-up extends the drama series’ second season to 18 episodes — the full length of a typical season for its Wednesday-night companion show, “Empire.” The first season of “star” ran 12 episodes.

The season-two premiere of “Star” drew a 2.4 18-49 demo rating in Nielsen live-plus-seven numbers, its best number for the series since its debut last season. In seven day multi-platform numbers provided by Fox, the season two premiere drew 7.5 million viewers. “Star” has benefited from a scheduling move that saw it take over the 9 p.m. Wednesday-night time period that had been occupied by Fox’s highest rated show, “Empire,” which now provides a lead-in to “Star” at 8 p.m. Both music dramas are executive produced by Lee Daniels.

Two episodes into its second season, “Star” is averaging a 1.6 Nielsen live-plus-same day rating in the 18-49 demo, up from a 1.3 in season one.

Tom Donaghy, who created “Star” with Daniels, also serves as an executive producer on the show, as do Pamela Oas Williams and Karin Gist. the series stars Jude Demorest, Brittany O’Grady, Ryan Destiny, Amiyah Scott, Quincy Brown, Benjamin Bratt, and Queen Latifah. The show tells the story of three young female singers attempting to make their way to music-industry success.