Luka Doncic celebrated his new three-year contract by going to Las Vegas with several members of the LA Lakers to watch the Backstreet Boys live on Saturday. Lead vocalist Nick Carter shared a photo of their meeting backstage.Carter posted an image of himself holding a Doncic jersey inside the locker room."Truly an honor to have @lukadoncic come by our show after making NBA history yesterday with a record-breaking extension with the @lakers. 🙌🏻," Carter wrote. View this post on Instagram Instagram PostCarter also got a Luka Doncic card personally signed by the Slovenian superstar. Carter initially said it was for his son's collection before jokingly claiming that it was actually for himself. Just like most Lakers fans, Carter was happy to see Doncic sign a three-year, $165 million extension to stay in Hollywood. "Luka Magic" is now the official face of the franchise, with LeBron James in the final year of his contract and being linked to a potential trade. View this post on Instagram Instagram PostOther players who attended the concert at The Sphere include Rui Hachimura, Jaxson Hayes, Maxi Kleber, Adou Thiero, Jarred Vanderbilt and Gabe Vincent. Lakers coach JJ Redick, team governor Jeanie Buss, general manager Rob Pelinka and incoming majority owner Mark Walter also watched the Backstreet Boys perform, as per ESPN.Luka Doncic is a huge fan of the Backstreet BoysLuka Doncic is a huge fan of the Backstreet Boys. (Photo: IMAGN)Luka Doncic is a huge fan of the Backstreet Boys and called them his favorite band when asked by ESPN's Malika Andrews last April."Luka Magic" also shared during the interview that Michael Jackson was his favorite pop star, "Mamma Mia" was his favorite musical, and his favorite song from "Mamma Mia" was "Dancing Queen."Doncic was born in 1999, a few years after the Backstreet Boys peaked. Nevertheless, all five members, AJ McLean, Howie Dorough, Nick Carter, Kevin Richardson and Brian Littrell, were hyped to meet the Slovenian superstar.