Keeping Up With The Kardashians star Kim was earlier seen leaving her hotel in Manhattan ahead of the book signing, where she squeezed her curves into a white skirt while showing off her hourglass figure.
Kim's new book Selfish is a journal of selfies reinforcing her status as the selfie queen!
Kim headed to bookstore Barnes & Noble for the signing and she proudly showed off her latest project, while also flaunting her curves for photographers.
It was a busy day for Kim, as she also promoted her new show #RedFlag, which is about mental illness.
Kim told fans that Wednesday night was the "debut of my new show", before inviting them to watch it. She tweeted: "I partnered up with the producers of one of my favourite shows Intervention to go behind the scenes of people living with mental illness.
"More people than you can imagine suffer from mental illness. I hope #REDFLAG opens up your eyes & hearts to the people struggling."
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All you need to know about Kim Kardashian: