The 33-year-old socialite took to the micro-blogging site to express her excitement after reaching a new milestone on Twitter, reported Ace Showbiz.
"20 million followers! Are you kidding me! Thank you so much! I love you guys," Kim tweeted.
The 'Keeping Up with the Kardashians' star also tweeted a revised version of her fiance Kanye West's song 'Sanctified'.
"All I really wanted was 20 million," she wrote.
Holding the record of the person with most Twitter followers is Katy Perry. The "Dark Horse" singer reached 50 million followers in early February, while Justin Bieber had 49.3 million at the same time.