Antoine Flament/Getty Rihanna revealed her go-to karaoke song at the world premiere of theSmurfsmovie in Brussels on June 28 The singer's unexpected choice is seemingly inspired by her latest role as Smurfette in the film "Maybe 'Burning Blue' by Mariah the Scientist," the pregnant star said with a laugh Rihannais all about the blue! While walking the blue carpet in a sheer baby blue Chanel look at theSmurfsworld premierein Brussels on June 28, the singer, 37, revealed that her go-to karaoke song is seemingly inspired by her latest role. Speaking to U.K. radio stationCapital FMat the premiere, the pregnant star, who voices Smurfette in the movie, shared her top pick when it comes to taking to the mic. "Ohhhh!" she said as she thought about her answer and placed her hand on the side of her head. "Oh my gosh, it's, it's, it's … maybe'Burning Blue' by Mariah the Scientist," she continued with a laugh. The track, which was released in May and premiered its music video on May 8, is the lead single from the R&B singer's upcoming fourth studio album, according toBillboard. It peaked at No. 25 on the Billboard Hot 100. Prince Williams/FilmMagic Thanks to theSmurfsmovie, fans of the Barbadian musician got to hear new music from the star in the form of"Friend of Mine." The catchy, synth-heavy song features lyrics about friendship and a music video filled with psychedelic graphics, bright colors and dancing Smurfs, including Rihanna as Smurfette. At the film's world premiere, Rihanna, who also produces the movie, was joined by her partnerA$AP Rocky. The Fenty Beauty founder dressed her baby bump in a flowy Chanel chiffon top and skirt, with the top featuring a sheer center section that revealed her belly. The look took 840 hours to make, according to the fashion brand. Never miss a story — sign up forPEOPLE's free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from celebrity news to compelling human interest stories. Arnold Jerocki/Getty Meanwhile, rapper Rocky, 36, who complemented Rihanna in a striped blue tie, appeared to reveal the sex of the couple'sthird child togetheron the blue carpet. Entertainment Tonightco-host Kevin Frazier asked the musician, "Is that the girl you've been waiting for?" as he gestured towards Rihanna. Rocky responded with a smile and said, "It is, man, it is." The PEOPLE Appis now available in the Apple App Store! Download it now for the most binge-worthy celeb content, exclusive video clips, astrology updates and more! Paramount Animation He then held up a Smurfette toy to the camera and added, "— Right here, right here," seemingly redirecting his answer. "You know what I'm asking!" Frazier replied as Rocky continued laughing. The pair are already parents tosonsRZA, 3, and Riot, 1. Smurfshits theaters on Friday, July 18. Read the original article onPeople
