Imelda May courted stoked the ire of her fans by cancelling an appearance at a festival in Dublin to jet to Vegas to sing the Irish national anthem at the T-Mobile Arena.
Sinead O'Connor usually gets the job to serenade the crowd while McGregor performs his walk to the octagon, but this time the honour fell to May.
In fairness, she knocked it out of the park. Watch, as Imelda May sings the Irish national anthem.