LISA Wilkinson has taken aim at Lena Dunham for squandering her ability to be a positive role model, after the resurfacing of a grotesque old tweet.

She was referencing the Girls star’s post from 2010, which read: “Just found my ‘creativity journal’ from 2005. It begins: ‘I dreamed I was a prostitute and that I molested a little African American rodent.”

The Today co-host retweeted it, adding: “When #LenaDunham is capable of being such a positive role model why on earth has she descended into stuff like this?”

When #lenadunham is capable of being such a positive role model why on earth has she descended into stuff like this? pic.twitter.com/GTeCM5DUNT — Lisa Wilkinson (@Lisa_Wilkinson) September 3, 2016

It’s not the only dubious social media post by Dunham which has begun recirculating this week.

The 30-year-old is being slammed on Twitter for a post about Asians, which has been branded as “gross and racist” and an example of her “white privilege.”

“An uncool thought to have: ‘Is that guy walking behind me a racist? Never mind, he’s Asian,’” Dunham tweeted five years ago.

An uncool thought to have: "is that guy walking in the dark behind me a rapist? Never mind, he's Asian." — Lena Dunham (@lenadunham) July 12, 2011

Andddd that's why Lena Dunham is not a feminist but she *is* a racist https://t.co/YXlk9LqCvX — Amari (@Mari_Cowan) September 2, 2016

@lenadunham An old tweet. But you're right Lena, this is a really uncool thought to have. And you had it. Are you proud of yourself? — Pinko.Snob (@pinko_snob) September 3, 2016

@lenadunham you carry yourself as a shining beacon of feminist smarts, many follow you, then you tweet this... — ⤵︎ (@CodyBrown) September 2, 2016

It follows a public apology from Dunham over comments she made last week about star NFL player Odell Beckham Jr., which she has since acknowledged to be based on her own “narcissistic assumptions.”

During a conversation with Amy Schumer, Dunham had revealed she was seated near Beckham, who she insisted was looking at his mobile phone instead of her because he found her sexually unattractive.

She apologised via social media over the weekend, saying she projected her personal insecurities onto the football star and “presented them as facts”.