But unlike most people, Gomez got the ultimate fan experience, hanging out with Dion backstage before the show!
Dion's return to Las Vegas has been a big deal. She started her residency back up on Feb. 23, almost six weeks after both her husband and former manager, René Angélil, and her brother, Daniel Dion, died after battles with cancer within days of each other.
The "My Heart Will Go On" singer's return show featured a moving tribute to Angélil and included family photos and videos. At one point during "All By Myself," Dion had to stop singing momentarily to regain composure.
Dion says she still talks to her late husband "all the time." Find out more in the video below.