Hernandez stopped to chat with ET's Carly Steel at the Los Angeles premiere of the new animated musical comedy Sing on Saturday, where she opened up about joining the DWTS live tour.
"We've become a big family the past couple of weeks, so this should be a lot of fun," the 16-year-old Olympian shared, adding that the cast actually had their first rehearsal over the weekend. "We were working on opening numbers and stuff like that so it's exciting!"
"It's nice to be able to go and just be yourself without having to compete at the same time," she added.
Hernandez admits that she doesn't yet know how many numbers she'll be performing during the tour, but teased, "I am doing a couple of numbers I did for the season."
"I think we're doing our Chicago re-creation," she added, referring to the Argentine tango she performed with partner Val Chmerkovskiy set to the musical’s iconic "Cellblock Tango" number. "That's probably one of my favorites."
While she's focusing on dance at the moment, that doesn't mean Hernandez has left her love for gymnastics behind. She plans on returning to the Olympics in 2020, but first she's going to take a hard-earned rest -- one that also includes a hiatus from dancing.
"[Gymnastics] is still a part of me but I'm definitely going to take a little break because this isn't really a break," Hernandez said with a laugh.
As for her fellow athletes from the elite Final Five, the U.S. women's gymnastics team that took home gold at this year's Rio Olympic Games, Hernandez said it would be "so cool" to have them turn out to watch her perform on the DWTS tour.
ET caught up with Hernandez immediately after her big DWTS victory last month, where she said winning the mirror ball "almost feels the same" as when she won her Olympic gold medal. Check out the video below to hear more.
Sing hits theaters Dec. 21.