Lea Thompson is officially a grandmother. 

The 63-year-old actress, famed for her role in Back to the Future, announced online the arrival of her first grandchild after her eldest daughter, Madelyn Deutch, 33, had a baby girl.

‘Welcome to this crazy beautiful world, little girl,’ she captioned an Instagram slideshow, featuring pH๏τos of the newborn alongside all her excited family members. 

Madelyn and her husband, Zach Carlisle, named their child Robbie June Carlisle, who was born on February 2, 2024.

Lea added alongside her snaps of the baby: ‘Robbie June Carlisle! I’m a grandmother, friends! Such joy and happiness is singing in my heart.

‘I am so grateful and proud of Maddie and Zach for having the faith and grace to take a chance on love. Howie, Zoey and I are… .’

Lea Thompson announced the arrival of her first grandchild after her eldest daughter, Madelyn Deutch, 33, had a baby girl (pictured with Madelyn in 2018)

Lea and her husband, director Howard Deutch, are also parents to actress Zoey Deutch, 30.

Zoey celebrated her niece’s arrival by sharing pH๏τos on her Instagram Stories, including one of a sleeping Robbie captioned: ‘The literal love of my life.’

Read More Back to the Future star Lea Thompson blasts ex Dennis Quaid for supporting Donald Trump

Madelyn also introduced her firstborn on Instagram, saying Robbie was born on 2 February.

She posted a picture from the hospital, with her baby on her lap, captioned: ‘Our rainbow girl.’

She also said her family was ‘so grateful’ to have their friends loved ones in their lives.

Lea, renowned for her role as Lorraine Baines-McFly in the Back to the Future trilogy, has been married to Howard since 1989.

Their daughters Madelyn and Zoey have both pursued careers in the entertainment industry, with the family collaborating on the 2017 film The Year of Spectacular Men, which marked Lea’s directorial debut, with Madelyn writing and starring in the film, and Zoey also featuring in a leading role.

In December, Thompson, who publicly supported Kamala Harris for president during the 2024 election, was emotional during an exclusive interview with DailyMail.com conducted hours after the vice president lost to Donald Trump.

‘Welcome to this crazy beautiful world, little girl,’ she captioned an Instagram slideshow, featuring pH๏τos of the newborn alongside all her excited family members

Madelyn and her husband, Zach Carlisle, named their child Robbie June Carlisle, who was born on February 2, 2024

Thompson said she was ‘scared’ for her daughters and admitted she did not know how to ‘move forward’ in the wake of Trump’s victory.

The actress struggled to fight back tears when asked about her recent criticism of her ex-fiancé Dennis Quaid, 70, who endorsed Trump, 78, at a California rally in October.

‘You recently spoke up about your ex, Dennis Quaid and his ties with Donald Trump,’ she was asked. ‘You’ve been a champion for women forever, yesterday, didn’t work out. How do we move forward from today?’

Thompson fell silent and started to cry before offering the dejected response: ‘I don’t know.’

Lea added alongside her snaps of the baby: ‘Robbie June Carlisle! I’m a grandmother, friends! Such joy and happiness is singing in my heart’

Madelyn also introduced her firstborn on Instagram, saying Robbie was born on 2 February

Struggling to contain her emotions she continued: ‘I don’t know. I’m sorry.’

Asked if there was any reason to be ‘hopeful’ she replied: ‘I don’t feel so hopeful. I feel… scared. I have daughters.

‘I don’t know if it will affect you or me, but I am a mom and know people that have been very affected by having babies that have died.

‘It just, I feel really bad for them. But America’s spoken.’

Lea, renowned for her role as Lorraine Baines-McFly in the Back to the Future trilogy, has been married to Howard since 1989 (pictured earlier this moonth)

She starred in the hit 1985 film Back To The Future opposite Michael J. Fox 

She continued: ‘We fight the fights. We fight to fight and the battles that we want to carry. It’s just not a lot of fun right now.’

Finishing with a nod to Back to the Future, she joked that America needs a DeLorean – the time travelling machine used by Christopher Lloyd and Michael J. Fox’s Dr Emmett Brown and Marty McFly.

‘We need that,’ she said. ‘We need to get on that.’

She and her husband, who met during the filming of Some Kind of Wonderful, have been for almost 36 years.