Katy Perry’s Epic Prank on Orlando Bloom Is Today's Must-See Moment

How well does the actor really know his fiancée and her voice?

This is the one that got away from Orlando Bloom. Or rather, the one that went over his head.

During an interview on BBC's Radio 1, the Carnival Row actor was asked to judge some listeners' celebrity impersonations. There was Scott who thinks he can perfectly mimic Tom Hardy's Bane from The Dark Knight Rises and James who has mastered David Attenborough. Then, there was Gemma who, according to the show's host, "can do a mean Katy Perry impression."

"Oh, well, I'll be the judge of that," Orlando quipped, of course believing he knows his superstar fiancée best. So, Gemma began belting out Katy's 2008 breakout hit, "I Kissed a Girl." And, well, Orlando is unimpressed, to say the least.

"Yeah, Gemma that was great, really well done," he said into the microphone. "Not convinced but hard for you because I do live with that voice."

Little did he know that that so-called Gemma was actually his love. "Hi baby," she said over the phone, revealing herself and this epic prank.

"Honey, I thought you knew me better!" the "Roar" singer continued to tease. "Do you think we should really be going down this long road if you can't even tell my own voice."

But before she could call off the wedding, Orlando backtracked and explained himself. Kind of.

"No, that was good babe because, you know what you did, you sort of did the English version or you...it was so clever," he said before turning the tables on her. "Are you awake then? I thought you were still asleep. It was a very late night last night."

Hmm, we wonder what these two were up to! In the meantime, watch the epic prank go down in the video above.