Michelle Obama's memoir 'Becoming' is Barnes & Noble's fastest-selling book of 2018

Former US first lady, Michelle Obama's memoir "Becoming" has become the fastest-selling book of 2018 at Barnes & Noble, surpassing the Trump administration tell-all "Fear: Trump in the White House" by veteran journalist Bob Woodward.

In addition, Barnes & Noble also announced that "Becoming" had the best first-week sales of any adult book since 2015's "Go Set a Watchman," the highly anticipated second novel from "To Kill A Mockingbird" author Harper Lee.

Publisher Penguin Random House also revealed that "Becoming" sold more than 725,000 copies on its first day of release last week, the highest single-day sales of any book by the publisher this year, according to CNBC.