The Legally Blonde star was booked as headline speaker for women's empowerment, The Simpatico Conference, report editors at Australian newspaper The Daily Telegraph.

Reese was scheduled to visit Brisbane, Sydney, Melbourne and Auckland on 12, 14, 16 and 18 July respectively with tickets costing between $1470 (£1000) and $2200 (£2110). However, tickets to the conference which aimed to inspire women “to be more ambitious, self-aware, and ­confident”, reportedly failed to sell and it has now been cancelled.

The news comes two weeks after the 40-year-old actress reportedly posted a picture on Instagram alongside two photoshopped koalas which she captioned: “One guess where I am headed this summer!” The picture has now been deleted from her social media account.

The Simpatico group, which was also behind aborted tours of boxer floyd mayweather and soccer icon Pele, posted a statement on the company’s website, which said: “We wish to bring ­attendees the best experience possible and, unfortunately, due to issues within our organisation, we are unable to move forward with our event at this time.

"The Simpatico Connection organisers wish to convey our sincerest apologies to the proposed keynote speaker Reese Witherspoon."

As of yesterday, editors at The Daily Telegraph report The Simpatico Conference website and associated social media sites had been shut down.

The actress has not made any comment on her social media accounts. She recently celebrated her 12-year-old son Deacon's elementary school graduation with a picture of the pair posted on Instagram at the weekend (11-12Jun16) "Off to Jr High!" she captioned the sweet photo. "Yay, Deacon! #proudmom"