Katy and Robert belted out Boyz II Men's hit in 2008
The pair – who are good pals – were celebrating a friend’s birthday in 2008 when they decided to duet on Boyz II Men‘s saucy hit I’ll Make Love To You.
Robert, 27, grabs Katy‘s hand as he sings lyrics such as: ‘Girl your wish is my command, I submit to your demands’.
Katy, 29 – who’s perched on a stool next to a lower-down Rob – then shouts: ‘This chair is too high to make love’ and sits on the actor’s lap.
Katy and Rob look like they’re having a pretty good time at the bash and hold glasses as they jokily perform their tune.
Both are dressed in low-key outfits, with Katy wearing a grey long-sleeved top and a trapper hat while Rob dons a brown leather jacket.
Watch Katy Perry and Robert Pattinson singing together…
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