[Iceman]

Adele's second studio album 21 has reached sales of 10 million units in the US.

The singer's global smash achieved the feat during its 92nd week of release, and is one of eight albums to reach the milestone within two years.

Overall, 21 is the 21st album to reach 10 million sales in the US since Nielsen SoundScan began tracking data in 1991, according to Billboard.

The album sold more than 28,000 copies over the past week in America, meaning its current total sales stands at 10,020,000.

To date, the highest-selling album in the US - according to SoundScan's data - is Metallica's self-titled 1991 release, which has shifted 15.8 million copies.

Adele slipped to 35 on the US Billboard 200 chart this week with 21, while in the UK it falls to 42, marking the first time it has charted outside the Top 40 since its release in January 2011.

What an achievement....