X Factor winner Sam Bailey is officially the No. 1 artists this Christmas, as the winner of the singing contest has shot to the top of the UK Singles Chart with her debut single, 'Skyscraper.' The single had been holding strong at the top of the chart for most of the week since it was released after her win on Sunday, 15 December, and it has managed to hold on to claim the No. 1 spot officially.

Sam Bailey
Looks like Sam is happy with the single

As well as being this year's Christmas No. 1, Bailey is also one of the fast-selling artists of the year, as 'Skyscrapers' has sold more than 149,000 so far. She also managed to out-sell her nearest competitor, Pharrell William's 'Happy,' by almost two to one. Not a bad feat for a 36-year-old mum of two making her chart debut.

"Being Number 1 is absolutely amazing!” Sam told OfficialCharts.com after being crowned this year's Christmas No. 1. “It really is the icing on the cake and it means Great Ormond Street Children's Charity and Together For Short Lives will benefit from the single which makes it extra special."

Watch the video for Sam's No. 1 single 'Skyscraper'

The success of Bailey means that the annual anti-X Factor single, which this year was AC/DC's 'Highway to Hell,' was unsuccessful in ousting Bailey from the top of the charts. The song, originally released in 1979, did become the band's highest charting single to date however, landing at the No. 4 spot. Every other single released by the rockers has failed to crack the top ten, although a number of their albums have been successful in the album chart.

With Williams at No. 2, Leona Lewis stayed at No. 3 with her festive jingle 'One More Sleep,' with 'Hey Brother' by Avicii completing the top five.

All the money made by 'Skyscraper' will go towards the charities Great Ormond Street Children's Charity and Together For Short Lives, with Chancellor/Sith Lord George Osbourne agreeing to waive VAT on the release.

Sam Bailey BBC
Clearly she's really happy with the single