Renowned actress Juliet Stevenson is to join an all-pink charity picnic in memory of a Highgate girl who died from cancer three years ago.

On Tuesday, the star of Truly, Madly, Deeply helped the mother of 17-year-old Alexandra Wylie to prepare for Saturday’s Pinknic in Waterlow Park, Highgate Hill, Highgate.

Alexandra, known as Allie, died in 2010.

The second annual fundraiser, which last year raised more than £6,000, will feature a band, an inflatable assault course for adults, a bouncy castle for children, face-painting and archery.

It is all in aid of the Alexandra Wylie Tower Foundation, which raises money to make a difference to the lives of Camden children living in poverty.

Alexandra’s mother, Lindsey Wylie, of Gladsmuir Road, Highgate, said: “Alex loved pink and if you look down at Waterlow Park on Saturday, there will be pink gazebos and balloons.

“The charity is now associated with pink.”

The picnic runs from noon until 5pm.