The fledgling children’s author began Ugenia Lavender, the first in a series of six books, when she was pregnant with daughter Bluebell Madonna, who turns two on May 14.

And the singer is stressing all about her own work. “I know there is a prejudice again celebrity authors, but if you read my stories you’ll know they’re not ghostwritten – only that I could be bonkers,” quips the talented mum.

Geri readily presents Ugenia – who’s the daughter of a dinosaur expert and TV presenter – her alter-ego or, as she puts it, “my inner brat”.

The little girl’s struggle to make friends at a new school are based on the 35-year-old’s own experiences in Watford, seeing off playground bullies and her “fantastic memories of playing kiss chase with the boys”.

The actress auctioned off a chance to be her guest at the premiere of her new film, ‘He is Just Not That Into You’, in aid of Oxfam.

Bidding for the date began at less than $1, but climbed to over $40,000 in just 10 days.

The winner, who is from the UK, will be brought to the event in a chauffeur-driven limousine to join the star on the red carpet. He or she can also bring a guest with them. After the screening, Johansson will hand her date a personal handwritten note.

However, it is unlikely any further romance will develop as the 23-year-old star is currently dating actor Ryan Reynolds.