Yingling explained the pair had wanted to retain Flirtmoji's “unified aesthetic” when it came to design, but initially struggled to add digital pubic hair.

“We tried to solve hair for a long time with our first line. And the strokes were just too big. But, you know, we finally had a little bit of time to evaluate our art and we saw an opportunity to downsize the strokes a little bit and that suddenly made it possible to do all kinds of weird, hairy, fluffy, pube-y shapes. It was always a priority for us.”

Yingling and McCarthy also found it became important to them that not every symbol was a symmetrical design, due to, you know, real life vaginas not being perfectly uniform.

Yingling said: “I was an icon designer before starting Flirtmoji, and symmetry is something that's really valued with icons, for legibility [...] So that's very much how we approached Flirtmoji and how Katy and I started drawing genitals. And, you know, after drawing maybe a dozen penises and vaginas, we thought things would be more interesting when things are a little bit off-kilter.”

McCarthy added: “There was one [vagina], I remember, that we were going to cut. And it was the one that was the least symmetrical of the original group. But a friend looked at it and said, ‘Well that's the one that looks the most like mine!’ [...] the thing that's beautiful about a particular body part is when it's not symmetrical, or it's off-angle or it's from a strange perspective.”

Vagina emojis have arrived – and there's one to suit everyone