[3] Luna was crowned Miss Universe Italy 2013 on 20 July 2013 at the Rainbow MagicLand theme park in Rome.

[4] By winning the title, Luna earned the right to represent her country at the Miss Universe 2013 pageant in Moscow, Russia, to be held on November 9, 2013.

As part of her prize package, she won a week-long stay in Milan to attend the prestigious John Casablancas modeling academy, where she received intensive training in all areas of competition to aid her preparation for the Miss Universe pageant.

Voce represented Italy at Miss Universe 2013 held in Moscow, Russia on 9 November 2013 where she vied to succeed outgoing titleholder Olivia Culpo but failed to place in the semifinals.

[citation needed] Because she has dual Dutch and Italian citizenship, Luna also entered the 2011 Miss Nederland pageant, placing among the Top 6 finalists.