Music
Rex Features
The Welsh singer's debut album, released in March, sold 1.685m to top the end of year countdown, the Official Charts Company revealed.
Meanwhile, Take That's The Circus sold 1.446m in just four weeks to become the year's second biggest-selling album.
The only other albums to sell a million copies in 2008 came from Kings of Leon, Leona Lewis and Coldplay.
The top ten albums of 2008 in full:
1. Duffy: 'Rockferry'
2. Take That: 'The Circus'
3. Kings of Leon: 'Only By The Night'
4. Leona Lewis: 'Spirit'
5. Coldplay: 'Viva La Vida'
6. Rihanna: 'Good Girl Gone Bad'
7. Killers: 'Day & Age'
8. Girls Aloud: 'Out of Control'
9. Pink: 'Funhouse'
10. Scouting For Girls: 'Scouting For Girls'
Source: Official Charts Company
> Click here for the top ten singles of 2008
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