That's not the Queen.. it's SuBo; ROYALTY.
SUSAN Boyle burst out laughing after dozy Eurostar staff mistook her for THE QUEEN.
Train officials bowed and curtsied to her on a trip back from Paris.
The singer, 48, was hilariously given the royal treatment at Gare du Nord after a misunderstanding by station staff.
An onlooker said: "A rumour went around that the Queen had arrived to catch a train back so everyone was told to observe royal etiquette.
"It soon became clear it was Susan - and not Her Majesty - but one train attendant still thought she was the Queen. Susan roared laughing when she realised the mix-up."
SuBo was with her manager and niece in first class at the time.
A source close to Susan said: "She'd had a pretty hectic few days, but this really cheered her up."
MIX-UP Singing star Susan