Katy Perry and Orlando Bloom visited the Children's Hospital Los Angeles (CHLA) dressed as Mr and Mrs. Claus.

The 32-year-old singer and the 39-year-old actor donned festive attire on Tuesday (20.12.16) when they dropped by the medical centre in California for a ''much-deserved visit'', which saw them greet patients and their relatives, sing Christmas carols and distributed gifts to the kids.

The hospital has shared a string of images of the pair with the children during their stop-off to their Instagram account.

Alongside one photo of the 'Pirates of the Caribbean' star dressed as Santa, alongside the 'Roar' hitmaker and a young girl, it read: ''Never naughty, always nice. The kids at CHLA received a much-deserved visit from Santa and Mrs. Claus ... who happen to look a lot like @katyperry and @orlandobloom!

#LiveLAGiveLA #katyperry#orlandobloom (sic).''

And CHLA has claimed the loved-up couple shared an ''instant friendship'' with one tiny tot named Baby Zion who sported a Batman costume and was pictured reaching out to Katy and Orlando.

The picture was captioned: ''Instant friendship between Baby Zion and @orlandobloom during his #MusicTherapy Jam Session with the kids at CHLA.

#LiveLAGiveLA #katyperry#orlandobloom (sic).''

The hospital has claimed whilst the duo sang to them the children were ''nestled'' in their beds and enjoyed sweet dreams of the raven haired musician as a ''sugarplum''.

The final image shared by the organisation was of the love birds cradling one child, which read: ''The children were nestled

All safe in their beds (@orlandobloom's arms)

While visions of sugarplums (@KatyPerry) danced in their heads.

#LiveLAGiveLA #katyperry#orlandobloom (sic).''

CHLA have also broadcasted the news of Katy and Orlando's visit on their Facebook page.

Meanwhile, a parent whose son has been staying in the hospital, but is due to return home in time for Christmas also shared a picture of the stars with her child, and has admitted Katy and Orlando's visit was ''so beautiful''.

Alongside a picture uploaded on her photo-sharing page, mother Kaitlin Bell wrote: ''Katy Perry and Orlando Bloom came an sang us Christmas carols. It was so beautiful. (sic).''