Videos from the event have been viewed hundreds of millions of times on TikTok, Twitter and Facebook.
The event made headlines in newspapers such as the New York Times and the Washington Post.
Kirsty said her newfound fame was “overwhelming”.
“People need to remember that I didn’t put myself forward, so this publicity was done on me without my consent,” she said.
“I don’t even really use social media, so it’s mental.”
The reaction became so upsetting that she turned off her phone for two days.
“I have incredibly thick skin and I’m always happy to make fun of myself, but I think it became a little too much for me when it was out of my control,” she said .
“People made fun of my looks and everything else.”
Kirsty said she was able to see the funny side of it now, but felt she had to speak up to show the person behind the green wig.