Amazon Prime Video's movie adaptation of Robinne Lee's novel The Idea of You has cast its leads.

Oscar winner Anne Hathaway will play Solène Marchand, a 39-year-old divorced mother who owns an art gallery in Los Angeles. She reluctantly goes to a music festival with her 12-year-old daughter Isabelle since her ex-husband Dan can't make it.

At the concert, Solène meets 20-year-old Hayes Campbell, (Nicholas Galitzine), lead singer of the "hottest boy band on the planet," August Moon.

Against all odds, Solène and Hayes engage in a passionate love affair.

Hathaway is currently promoting the historical drama Armageddon Time which is L set to open 28 October.

Galitzine recently starred opposite Sofia Carson in Netflix's Purple Hearts. He has also finished shooting the gay romcom Red, White & Royal Blue.

The Idea of You will be directed by Michael Showalter, known for The Big Sick, The Eyes of Tammy Faye, and The Dropout.

Tony Award nominee Jennifer Westfeldt of Kissing Jessica Stein will write the screenplay.

Hathaway will co-produce via her Somewhere Pictures label.