The best friends' hectic schedules mean they don't get to spend much time together but on Thursday evening (7 November) Selena made sure fans knew they were still very close.
Selena uploaded a picture to Instagram showing the pair pouting for a selfie while in a dressing room. She didn't say where the snap was taken.
She added the caption: "It's just the evidence of forever. No matter what."
Demi replied: "Love you so much… #14yrsstrong."
Selena had been scheduled to perform on last night's US X Factor results show, which features Demi as a judge, but her appearance was postponed after a glitch with voting after the Wednesday night performance show which meant all the contestants had to sing again.
She'll now perform next week which means Selena and Demi will have even more time to catch up!
The gorgeous actresses-slash-singers have been best friends since they were kids, meeting when they both auditioned for Barney and Friends.
A few years ago it was rumoured the pair had drifted apart with Demi later confirming in an interview that there was a period when they hadn't been as close as they previously were.
She told MTV News earlier this year: "We've had periods of times when we grew apart, and we just didn't really talk. But now we're in a place where we realise that life is so short, and that when you have people in your life that love you so much, then you should just always be around them."
Demi added: "She has a great soul, she's talented, she's beautiful and she will always be really, really close to my heart."
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