Christina Aguilera's duet with a hologram of Whitney Houston has been cancelled.

In a statement, Pat Houston, who is the ex ecutor of Whitney's estate, said: "We are so appreciative of the opportunity for the Whitney Houston hologram to appear on NBC's The Voice with a talent pairing as extraordinary as Christina Aguilera and Whitney Houston. We were looking to deliver a ground breaking duet performance for the fans of both artists.

"Holograms are new technology that take time to perfect, and we believe with artists of this iconic calibre, it must be perfect. Whitney's legacy and her devoted fans deserve perfection. After closely viewing the performance, we have decided the hologram was not ready to air. We have much respect and admiration for Christina, and she was absolutely flawless."

Meanwhile, the 35-year-old singer - who sits on the show's judging panel alongside Blake Shelton, Adam Levine and Pharrell Williams - previously teased there were some "very exciting" things planned for the future.

She said: "I am sworn to secrecy. I can't say anything, but I'm very excited about the finale. Very exciting things happening."

And last year, Hologram USA showcased plans to take the virtual likeness of the 'I Will Always Love You' singer on a world tour. Whilst no details have been announced as of yet, the move was approved by Pat.

She said in a statement at the time: "It's a great opportunity for her fans to see a reinvention of one of the most celebrated female artists in history and to continue a legacy of performances that will not be forgotten in years to come."