Hamleys has reported its "best signing ever" when Union J attended a VIP doll signing event at the flagship Regent Street toy store.
Over 800 Union J dolls sold throughout the morning as over 2,000 fans – some having queued from 2am – waited to have them signed by the X Factor quartet.
The foursome also held an exclusive meet and greet for ten VIP fans who won the opportunity for a one on one doll signing with the band via the Hamleys Facebook page.
Following the success of the event, Viviid and Hamleys are now in discussions over a Union J signing tour of key Hamleys stores throughout the UK this Easter.
Mary Wood, marketing director from Vivid, said: "The response to the Hamleys signing event surpassed all our expectations.
"We were astounded that fans were happy to queue from 2am that morning to meet their idols and the hype it generated through social media channels was (and still is) incredible."