Katy Perry
The California Gurls singer’s moment of confusion has sparked a litany of hilarious online reactions.
In one touching moment, the Prince of Wales kissed his father on the cheek.
"Feeling sorry for the person sat behind Katy tbh."
The event being held on May 7 in the grounds of Windsor Castle will be in front of a crowd of 20,000 members of the public and invited guests.
The reality star’s fitting response to the singer left fans roaring.
Kaya Stewart, 23, impressed judges with her heartfelt performance of This Tattoo, co-written with her father.
The 25-year-old mother of three said the singer's comments were "hurtful" and "embarrassing."
"Her pool is not a pool that I necessarily understand, and I think my pool is not a pool that she necessarily understands."
"Love comes in many family iterations," the singer said as she presented the model with an award.
The American Idol judge was sent an early demo of Billie's song Ocean Eyes – but apparently wasn't impressed.