Adele's "25" is already 2015's biggest selling album in U.S.

Adele’s 25 is already a blockbuster. After only three days since its release the singer's third album has already sold 2.3m copies in the US, according to Nielsen Music. This instantly makes it the year’s best-seller, surpassing with 1.76 million sold by Taylor Swift’s "1989". 

Since Neilsen Music began tracking sales in 1991, only N Sync’s 2000 album, "No Strings Attached", sold over 2m copies in a single week. By the end of Monday, Billboard reports "25" should eclipse that record’s single-week sales record of 2.4m.

Adele’s previous album, "21", was the best-selling album of both 2012 and 2011 in the U.S. In 2012, it shifted 4.42 million copies, and in 2011, it moved 5.82 million.

In the UK, "25" is also on track to become the fastest-selling album ever. Over three days, "25" has sold over 538,000 copies in the UK. Only two albums have ever sold more than 500,000 copies in a week in the UK: Take That’s "Progress" sold 519,000 in its debut week in November 2010, and Oasis’s "Be Here Now", the all-time record holder, notched up 696,000 in its first chart week in August 1997.