News Adele's '25' Sells 3.38 Million Copies During First Week By Elizabeth VanMetre 7:20 AM PST, November 30, 2015 NBC Adele is unstoppable.After industry forecasters predicted her album, 25, would sell 2.9 million copies in a week, she surpassed that number with 3.38 million copies, according to Nielsen Music. WATCH: Britney Spears Shows Off Ballet Moves to the Tune of Adele's 'Hello' The total is the largest single sales week for any record since 1991, when Nielsen started tracking the point-of-sale of music.The “Hello” singer made headlines last week after 25 passed *NSYNC’s No Strings Attached record earlier in the week. Both albums are the only in Nielsen history to sell over 2 million copies in one week. WATCH: Adele Says Motherhood Changes 'Everything,' Love for Son Angelo 'Takes My Breath Away' It seems the 27-year-old songstress was seen everywhere last week from Saturday Night Liveto announcing her European tour in the hilarious video below. View this post on InstagramUK & EU, go to live.adele.com for detailsA post shared by Adele (@adele) on Nov 26, 2015 at 5:02am PSTThe super star even stopped by The Tonight Show, where she joined Jimmy Fallon and The Roots to perform “Hello” with classroom instruments. Did we mention the results were amazing?