Martin Short feared Selena Gomez might've been a "pop princess nightmare" before they first met.

Martin Short has loved working with Selena Gomez

Martin Short has loved working with Selena Gomez

The 73-year-old actor stars alongside Selena, 31, in the hit comedy series 'Only Murders in the Building' - but Martin initially had some doubts about working with the actress.

Speaking to PEOPLE, the veteran star explained: "The first day we shot, I had never met Selena. Because of COVID, we'd only Zoomed. And I was driving to work and I thought, I wonder what Selena's could be like? I mean, she could be a nightmare. She could be a pop princess nightmare.

"Right away - from the first second we started to the makeup room - it was, like, fabulous."

Martin also revealed that he admires Selena's professional attitude.

He said: "[She's] so good, so talented, such a pro - it's fabulous."

Earlier this year, Selena heaped praise on her 'Only Murders in the Building' co-stars.

The brunette beauty initially felt anxious about working with the likes of Martin and Steve Martin - but she ultimately relished the experience.

Selena told The Wrap: "Working with Steve and Marty, I was terrified at first, but relieved that comedy happened to be in my comfort zone. If anything, they’ve helped sharpen my skills."

The award-winning star also suggested that comedic roles come "quite naturally" to her and that the show has boosted her confidence.

Selena shared: "I hope to be as funny as they are one day. They are just really gifted at creating a situation out of nothing and making people laugh and I admire that deeply.

"I guess comedy comes quite naturally for me, but it’s also helping me become more confident in approaching other roles that might be very different."