The Call Me Maybe singer has teamed-up with label mate Biebs on track Beautiful for her debut album Kiss and claims fans will be more than pleased with their "charming" duet.
When asked to described the track in three words, Jepsen told us: "It's kind of like a friendship ballad, it's kind of charming and it's sweet and a little bit of a different flavour to what I have on my album too.
"So I will say charming, friendly and hopefully feel-good, I think it's like a feel-good song for sure."
Speaking of what it was like to work with Justin in the studio, Carly revealed: "It was really exciting, I had actually just flown into LA for the first time to meet Scooter [Braun] and my whole team at School Boy Records and Interscope and I was pretty nervous to meet Justin.
"He was just a regular guy, so nice, so talented but at the same time really humble about it and played me some songs from his record Believe and one of the tunes was the song Beautiful and he'd written it with a good friend and producer that we both know, named Tony Gad."
She continued: "I remember just thinking 'wow, this is such a different flavour that I'd ever think of doing, it's really cool' and he asked me if I'd like to sing on it. Of course, I was very excited to do that, and we did it that night.
"I was going to go to bed but they were like 'why don't you just jump into the studio tonight and finish the song right now?' So, fifteen minutes later I was in the vocal booth."
Carly then went on to address her gratitude to Biebs for his continued support of her career, stating: "I couldn't ask for a bigger gift than having Justin come to Canada and shed some light on my project and really give me the opportunity to be here today and to be travelling the world and getting to do music for a living.
"Since I was seven years old, this is all I've been wanting to do, and having him kind of be my supporter and really my introduction to everything; it's the greatest gift, I'm forever thankful to him for that.