There's no sign of that shiny, sequined glamour at our interview, which he attends dressed in a simple black tee and trousers.
"I don't like dressing like a woman when I am not onstage," he confides. "And anyway, people should have to pay to see me in all those outfits!"
He does, however, wear his waist-length hair proudly, admitting that he gets it professionally washed every single day before putting it up. "I alone am enough to keep the hairdressers here in business," he jokes.
After a career that has spanned stage work, television, a culinary travel show and numerous stand-up performances at Singapore venues like the Hard Rock Café and the infamous Boom Boom Room, and at London's Institute of Contemporary Arts, one wonders what lies next for this lissome glamour-girl with a difference.
"If I am given opportunities to perform abroad, I would love to take them up," Kumar says.
"But for now, my main priority is developing a talk show for a Singaporean channel. I want to interview celebrities and members of the public, to ask them what they think about Singapore, what they like, don't like," he tells me.
It sounds suspiciously like the beginning of a political career. "Well, I would like to be a minister for people," he says.
"Actually, what I want to do is teach Singaporean kids that they need to learn to think for themselves."
As for his own success, he confides that "it feels great. Maybe now people here can look at cross-dressers differently."
"And anyway, it's good to let the world know that Singapore's not just clean and green anymore!" he quips, before heading off to prepare for his next performance.