Lena Dunham, the creator of Girls who recently published her memoir Not That Kind of Girl, has denied allegations that she sexually abused her sister Grace.  Kevin D. Williamson, a columnist for the conservative news magazine National Reviews - and Bradford Thomas, writer for the conservative website Truth Revolt - accused Dunham of admitting to the abuse during passages from her book.

Lena DunhamLena Dunham [centre] was accused of abusing her young sister

In one excerpt, Dunham wrote, "Do we all have uteruses?' I asked my mother when I was seven. 'Yes,' she told me. 'We're born with them, and with all our eggs, but they start out very small. And they aren't ready to make babies until we're older.'"

"I look at my sister, now a slim, tough one-year-old, and at her tiny belly. I imagined her eggs inside her, like the sack of spider eggs in Charlotte's Webb, and her uterus, the size of a thimble. 'Does her vagina look like mine?' 'I guess so,' my mother said. 'Just smaller.' One day, as I sat in our driveway in Long Island playing with blocks and buckets, my curiosity got the best of me.Grace was sitting up, babbling and smiling, and I leaned down between her legs and carefully spread open her vagina. She didn't resist and when I saw what was inside I shrieked."

More: check out our Lena Dunham pictures

"My mother came running. 'Mama, Mama! Grace has something in there!'"

"My mother didn't bother asking why I had opened Grace's vagina," Dunham added, "This was within the spectrum of things I did. She just on her knees and looked for herself. It quickly became apparent that Grace had stuffed six or seven pebbles in there. My mother removed them patiently while Grace cackled, thrilled that her prank had been a success."

After criticism of the passages, Dunham took to Twitter to defend herself, writing, "The right wing news story that I molested my little sister isn't just LOL-it's really f--king upsetting and disgusting.And by the way, if you were a little kid and never looked at another little kid's vagina, well, congrats to you. Usually this is stuff I can ignore but don't demean sufferers, don't twist my words, back the f--k up bros. I told a story about being a weird 7 year old. I bet you have some too, old men, that I'd rather not hear. And yes, this is a rage spiral. Sometimes I get so mad I burn right up. Also I wish my sister wasn't laughing so hard."

More: 'Girls' star did not like having sex until the age of 25