Graphic artist Lydia Leith, 24, from Carlisle, Cumbria, says she has sold thousands of "Royal wedding sick bags".
"We've heard so much about the royal wedding already and I'd heard so many people saying they were sick of it.
"I sent the sick bags out to some graphic design magazines I like and in no time it was all over Twitter.
"I did it as a joke. I never knew it was going to take off as it has.
"I'm not an anti-monarchist but it's true that you can't escape it. I thought I could do something with that."