Little Mix have spoken of their joy after making history and becoming the first girl band to take The X Factor title.
Band member Jesy Nelson told ITV's Daybreak: "I don't think it is ever going to sink in."
Jesy, 20, from Essex, added: "Every week, we prepared ourselves to go out."
Fellow band member Leigh-Anne Pinnock, 19, from London, said: "When he said Little Mix, it was 'My gosh, this is just insane'. We are so happy."
The group, mentored by Tulisa Contostavlos, were speaking after they scooped the crown in front of a 10,000-strong audience at Wembley Arena in north London last night, with millions more watching the ITV show live on television.
The band, made up of Jesy, Leigh-Anne, Jade Thirlwall, 18, and Perrie Edwards, 18, both from South Shields, Tyne and Wear, beat 23-year-old Liverpudlian Marcus Collins to the title.
Jade told the programme that their popularity had increased over the contest as people got to know them. "People got to see our personalities and got to see who we are as people and I think that really helped... I think we chose the right songs, and we showed what kind of artists we wanted to be."
Jesy said of the atmosphere at Wembley Arena: "In a weird way, it felt like we were at home. We were there for boot camp - we performed at Wembley for boot camp."
She also said of their mentor: "Tulisa is the most amazing person. She's incredible. We wouldn't have got this far if it wasn't for Tulisa."
Simon Cowell, who was absent from the show to concentrate on the US X Factor, tweeted: "I was really hoping a group would win this year. "Tulisa has done a great job. These girls could be stars."