Britney Spears' memoir sold more than one million copies in the US in its first week.

Britney Spears' memoir sold more than one million copies in the US in its first week

Britney Spears' memoir sold more than one million copies in the US in its first week

The 41-year-old singer feels "grateful" to her fans for their "unwavering support" after The Woman in Me's first week success.

She said: "I poured my heart and soul into my memoir, and I am grateful to my fans and readers around the world for their unwavering support."

Gallery Books, a division of Simon and Schuster, revealed 'The Woman in Me' sold 1.1 million copies across the US, including pre-orders, print books, ebooks and audiobooks formats.

Britney's bombshell book has also been a worldwide success, selling an estimated 2.4 million copies in print globally after being published in 26 languages/ territories.

Jennifer Bergstrom, senior vice president and publisher of Gallery Books, said: "'The Woman in Me' has been the subject of intense interest since it was announced and has received outstanding critical acclaim since its publication.

"It is selling in extraordinary numbers across all editions worldwide, and we expect strong sales to continue throughout the holiday season and beyond.

"Readers and reviewers have embraced Spears’s candid and powerful memoir in which she is finally able to share her story on her own terms."

Some of the revelations in the book, include Britney opening up about having an abortion when pregnant with her ex-boyfriend Justin Timberlake's baby.

She wrote: "I loved Justin so much. I always expected us to have a family together one day. This would just be much earlier than I’d anticipated.

"Justin definitely wasn’t happy about the pregnancy. He said we weren’t ready to have a baby in our lives, that we were way too young.

"I’m sure people will hate me for this, but I agreed not to have the baby.

"I don’t know if that was the right decision. And yet Justin was so sure that he didn’t want to be a father."

Britney also opens up in the tome about being under her controversial 13-year conservatorship, and reveals why she shaved her own head in 2007.

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