Lauren Conrad has topped the New York Times bestseller list with her second novel Sweet Little Lies.
Speaking to People, the reality star explained that she had enjoyed writing the book.
"It's so gratifying for my second book to be so successful and it was so fun to write," she said.
"The characters were already developed so I really enjoyed the process so much more this time around. All the characters have become like my friends now."
She added: "I just sat in bed writing and it was the best process. Who gets to work from home in their PJs?"
Conrad's first novel LA Candy reached the top of the list in August and is now being made into a film.
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