You can see it in their faces; Logan Edra and Rachael Hudak love to dance.
“Well, it’s obviously tiring to dance like for a long amount of time but it’s just, like, another way for us to express ourselves,” 12-year-old Logan said.
Now, the girls get to do it with a pop-star.
They entered a contest to win a chance to dance on stage with Justin Bieber while he was in San Diego on his Purpose Tour.
Contestants had to learn choreography to Bieber's song "Children" and then submit a video of themselves dancing to the song.
Only four kids were picked out of hundreds in San Diego; Logan and Rachael earned two of the spots.
"I was so surprised," 13-year-old Rachael said. "Like, I didn't think I was going to get it and then, like, my mom started screaming out of nowhere and I'm like 'What? What happened?' and she was like 'You got it!' and I was so surprised."
"When my dad first told me I couldn't believe him," Logan said. " It took him, like, literally, like, 20 minutes for me to believe him that I made the submission."
They spent hours practicing, and it's a little scary.
"I am extremely nervous," Logan laughed.
But the two friends are ready to take the stage.
"I'm really excited," Rachael said. "It's like a dream come true, I can't believe this is happening."
"It seems very unreal to me because I would have never thought I would be dancing with Justin Bieber," Logan said.
Tuesday is the first time they'll practice all together on stage with Bieber. They'll get a few hours before the concert starts to run through it.