Footage hit the internet of the pair singing Boyz II Men's I'll Make Love To You on Friday.
It is unclear why footage has only just hit the internet as it appears to have been taken around the time the first Twilight film was released in 2008.
Don't quit your day jobs: Footage hit the
internet on Friday of Robert Pattinson and Katy Perry singing a not so
wonderful version of Boys II Men's I'll Make Love To You at Dimples
Karaoke Bar in Burbank, California
While Katy - who turned 29 on Friday - is known for her great singing voice, Robert has also had singing success with a number of his songs ending up on the Twilight film's soundtrack.
Neither however, seemed to be able to draw on their star talent at the over 30-year-old bar that has seen many a singer show off their chops before hitting the big time.
As is traditional, the bar filmed their hilarious performance, which is kicked off by the California Gurls singer.
Interesting duet: While the pair are both
singers, neither however, seemed to be able to draw on their star talent
and they struggled to keep up with the words in the undated video
Also struggling to keep up with the karaoke machine's bouncing ball, the English star resorts to making up words before stopping when someone passes him a drink.
The actor does not get a chance to enjoy some more liquid courage, with his duet partner deciding her chair is not conducive to signing a sexy love song.
Pour it up: Both Rob and Katy seemed to have
indulged in some alcoholic beverages with the California Gurls singer
swinging a beer bottle around in the air as she sung
Not a love making chair: In the video Katy decides she can sing better if she sits on the Twilight star's lap
The Fireworks singer then gets up and drapes herself across Rob's lap as he continues to keep singing.
The pair have previously been romantically linked and in the video it is not hard to see why, with Katy flirtatiously stealing sips from the young actor's drink all the while sitting in his lap.
At one point Rob slows it down and tries to seductively say the lines instead of singing: 'Lets go slow, I ain't got nowhere to go. Throw your clothes on the floor, I'm going to take my clothes off too.'
Sneaky Katy: The pair have previously been
romantically linked and in the video it is not hard to see why, with
Katy flirtatious stealing sips from the young actor's drink all the
while sitting in his lap
As recently as this year, the pair have been romantically linked with Katy even went as far as texting Robert's ex-girlfriend Kristen Stewart to assure Kristen she was not dating Rob following their split.
Katy told ELLE UK's September issue: 'I sent her a text message saying, ''I know you’ve seen all this stuff but you know I would never disrespect you. I’m not that person.''
'I’m just trying to be a friend to him but it is unfortunate that I do have a set of t*ts.'
Vampire song: Rob looks as though he has just
walked off the set of Twilight, with his full head of hair styled in an
pompadour and wearing an aviator jacket that looks a lot like his
charter Edward Cullen
