The cancellations come amid accusations Dunham admits molesting her younger sister in the book, but she has blasted the allegations, branding them 'upsetting and disgusting'.
The 28-year-old 'Girls' actress has been promoting book in the US and Europe throughout October and was due to appear at the Antwerp Book Fair in Belgium on November 2 but now scrapped it, reported Contactmusic.
"To my Belgian readers, so very sorry to miss the Antwerp Book Fair today but I can't wait to come back and eat fries with you. Much love," she posted on her Twitter page.