Selena, 21, met the young girl at the airport before getting on the same flight as her and it appears they got on like a house on fire.
After posing for a picture together, which she then shared on Instagram, Selena invited the girl along to one of her shows.
Selena told her followers: "Met this little [girl] at the airport. Ended up on the same flight and gave her tickets to my show hehe, I kinda like my job!"
The pop star's fans were clearly impressed with her sudden act of kindness: "You're so sweet for giving her tickets. You really love your job :) would love to meet you too," one commented.
Another added: "You're so nice!!!!! This girl is so lucky!!!!!!!!!! LOVE YOU XOXO"
Watch the video for Selena's latest single 'Come And Get It' here: