Sorry if you didn't see him.

Halloween is a time for fancy dress and costumes, but if you happened to be on Grafton Street, Dublin yesterday evening then the answer is no, your eyes didn't deceive you. Justin Bieber did in fact take a stroll down one of Dublin's busiest streets ahead of his sold-out gigs at the 3Arena. One fan named Keith Casey managed to spot the Canadian singer before pursuing him for an autograph. It appeared that Bieber and his security team weren't too impressed by Keith's persistence. This being said, we do love the fact that every passerby has absolutely no idea that the Grammy nominated singer was walking past them. After news emerged that the singer was fond of an auld saunter around Dublin, plenty of his fans were absolutely sickened to miss out on a potential meet and greet with their idol. https://twitter.com/CrossyTweets/status/793191180012060676 https://twitter.com/Taylor_DjSwitch/status/793198614797508609 https://twitter.com/TarFitzgerald/status/793200758636285952 https://twitter.com/NiamhE_/status/793219355936952320 https://twitter.com/laurenoreilly_/status/793241270143582208 https://twitter.com/MeganSmall2002/status/793235214256447489 https://twitter.com/AmyHealy_Xx/status/793226198398763008 Right now, they must all be feeling very sorry for themselves.