Mariah Carries A Lot

(Photo: Splash News Online) Mariah Carey and her new husband Nick Cannon reportedly lugged 20 pieces of luggage on their 3-day trip to London.

"There were 15 suitcases on one trolley, and 8 on another," a witness at Heathrow Airport told In Touch Weekly.

Of course, transporting all that baggage is the easy part.

"There is nothing worse than packing for Mariah," a former employee said. "A weekend trip can be a weeklong job. Nightmare, is all I can say."

And this wasn't even a vacation. They went to England to appear on the British singing show 'The X Factor.'

Any guess as to how many of the bags were for Mariah and how many were for Nick?