A mum-to-be has gone viral on TikTok after she threw a gender reveal party for her boyfriend - but forgot he was colour blind and couldn't work out the baby's sex. <br /><br />Jen Cowan, 23, organised a last-minute reveal at her parent’s house and wanted to capture the moment her partner Bailey reacted to the big news. <br /><br />Mobile phone footage shows Bailey, 25, pulling a pink confetti cannon in the living room to unveil they were having a girl. <br /><br />But a confused-looking Bailey looks over at his girlfriend at which point the penny dropped and she realised she'd forgot he wouldn't be able to see the colour.<br /><br />Jen was forced to tell her partner they were expecting a baby girl after he could hilariously be seen mouthing: "What is it?"<br /><br />The awkward moment the big reveal went wrong has since been viewed more than 2.5 million times since being uploaded to TikTok on January 7. <br /><br />Jen, of Chingford, Essex, said the young pair have joked about the video ever since it was posted and they cannot believe how much interaction it has got online. <br /><br />The self-employed freelance website designer said: “Bailey is so used to being colourblind.<br /><br />“He didn’t even think about it and I completely forgot.<br /><br />“When the confetti popped and he looked confused, I didn’t understand at first, but then I remembered he was colour blind.<br /><br />“Bailey is a very laid back person so I don’t think he was too bothered about not seeing the pink confetti.<br /><br />“We have both just laughed about it now.<br /><br />“We were both sure I was having a boy, so I think I was more shocked about finding out we were having a baby girl in the gender reveal."<br /><br />Before going to bed, Jen had posted their reaction video on TikTok and thought nothing more of it as her other videos had only received a handful of likes.<br /><br />When she woke up in the morning her phone was exploding with notifications and found out the video has gone viral.<br /><br />She added: “It’s so weird how much attention the video has got, and it is very unexpected.<br /><br />“The next morning, I opened my TikTok, and I had 99+ notifications and that is when I realised it had gone viral. It’s so crazy.”<br /><br />Jen had been for a private early gender reveal scan at 16 weeks on November 10 last year.<br /><br />Thinking she would regret not having a gender reveal party, she decided to hold a low-key celebration at her parent’s front living room with her close family present.<br /><br />An hour before the gender reveal shower, they had the secret confetti canon filled with their baby’s gender colour so it would also be a surprise to them.<br /><br />Jen decided to film Bailey popping the confetti canon as a keepsake for when their baby is born.<br /><br />Bailey, a self-employed online salesman, was born Moderate Protan colour-blindness which means all colours appear dull and he struggles to tell them apart.<br /><br />The first-time parents have been together for almost six years after meeting at a local pub in August 2017 and plan to move in together in two months’ time.<br /><br />Jen, who is six months pregnant, said they were both looking forward to having their first child together in April.<br /><br />She added: “When I first out I was pregnant I was scared but now I am just excited.<br /><br />“I’ve always wanted to be a mum ever since I was little. I was very set on being a young mum too.<br /><br />“Our baby girl is due on April 25 this year and I can’t wait to meet her.<br /><br />“She is definitely going to be girlie girl.”