Pia Wurtzbach, Olivia Jordan go all out '90s with impromptu Backstreet Boys karaoke

Miss USA 2015 Olivia Jordan shares the #sepanx fans of "Team OliPia" feel, but she's making the most out of every minute with her roommate, Miss Universe 2015 Pia Wurtzbach.

The beauty queens are back in Las Vegas at the T-Mobile arena as Jordan prepares to crown the next Miss USA. Roomie Wurtzbach is part of panel of judges that selected the Top 10 finalist and she will also be attending the coronation night to watch Jordan do her final walk—and the two of them also have front row seats to a performance by the Backstreet Boys for the show.

They shared their excitement by holding an impromptu karaoke session a day before the big night.