Taylor Swift Reacts to Selling Nearly 1.3 Million Album Copies By Lip-Syncing a Kendrick Lamar Rap

— -- Taylor Swift was excited that her album "1989" sold better than expected.

How excited? She felt compelled to sing about it -- kind of.

"Industry experts predicted 1989 would sell 650k first week. You went and bought 1.287 million albums. AND IT'S GOT ME LIKE," she wrote on Instagram, a segue into a video she posted of herself lip syncing Kendrick Lamar's rap, "Backstreet Freestyle."

Swift's debut pop album, "1989," debuted at #1 on the Billboard 200 albums chart, though it fell short of a notable record: It failed to surpass the one-week sales record for an album by a female artist, currently held by Britney Spears, whose 2000 disc, "Oops!...I Did It Again," sold 1.319 million copies during its first week.

However, it's been selling incredibly well: "1989" sold 1.287 million copies from Oct. 27, the day it dropped, through Sunday, according to Nielsen SoundScan. That makes this the biggest sales week for an album since Eminem's 2002 release, "The Eminem Show," which moved 1.322 million copies during a one-week span.

"1989" ranks second in sales for the year, trailing just the "Frozen" soundtrack, which has sold a whopping 3.2 million copies since the start of 2014. This album is Swift's third album to sell one million copies in one week, after 2010's "Speak Now" and 2012's "Red." Of those releases, "1989" had the biggest debut, and Swift is the only act to have three such albums.