Miranda Hart has pulled out of the 'Royal Variety Performance'.

Miranda Hart

Miranda Hart

The 43-year-old comedienne was set to host the annual television show, which is attended by senior members of the royal family and raises money for the Royal Variety Charity, in December but has now been forced to cancel her gig due to a clash in her work schedule.

A source told the Daily Mirror newspaper: "Everyone was thrilled when Miranda agreed to host the 'Royal Variety Performance', but sadly it now seems it isn't to be.

"It is a charity event so the hosts don't get paid, but they're always falling over themselves to do it because it's seen as such a huge honour to be asked. It's probably about as high profile as it gets."

Despite her decision to pull out of the show, which was fronted by Jack Whitehall last year at the Hammersmith Apollo in London, her representative hasn't ruled her out of hosting the event next year.

The spokesperson said: "Sadly, it's work commitments prohibiting Miranda from hosting the 'Royal Variety Performance' this year."

Meanwhile, the funnywoman's latest cancellation comes just weeks after it was revealed she was the reason the remake of 'Up Pompeii!' was scrapped after she turned down the chance to play the lead.

A spokesperson for the BBC said at the time: "Earlier in the year a number of scripts were developed and considered for the BBC One revivals as part of Sitcom Season, including 'Up Pompeii!' Unfortunately the desired cast weren't all available to film in time for the season. We wouldn't rule out revisiting it in the future."

And just before that, Miranda announced she's been forced to pull out of the next series of 'Call the Midwife' as well as the Christmas special, in which she was supposed to reprise her role as Camilla 'Chummy' Fortescue-Cholmondeley-Browne, due to other work projects.