Frail Michael J. Fox, 65, reunites with Back To The Future star Christopher Lloyd for his 88th birthday

Michael J. Fox delighted Back To The Future fans this week as he reunited with co-star Christopher Lloyd for his 88th birthday.

Fox, 65, who has waged a public battle with Parkinson's disease, looked delighted as he joined his good friend for dinner, in a post paying homage to their hit franchise, 'Great Scott you’re 88! That’s some serious s**t, love you!'

Lloyd was in turn seen smiling warmly at Fox in the sweet snap, before posting his own reply saying: 'We are truly timeless. Love you friend.'

Fox starred in the Back To The Future franchise as Marty McFly, a high schooler whose unlikely friendship with Emmett 'Doc' Brown (Lloyd) leads him to travel back to the 1950s in a time machine made out of an already defunct DMC DeLorean. 

Despite suffering a series of setbacks that ballooned the film's budget, the first Back To The Future was a box office hit that cemented Fox's status as a leading man and turned him and Lloyd into pop culture icons. 

Its success led to two more blockbuster sequels, Back To The Future Part II (1989) and Part III (1990). 

Fox and Lloyd have continued to collaborate on projects in recent years. 

Fox has lived with Parkinson's disease since 1991 and has raised over $3 billion since going public with his diagnosis in 1998, as per the Michael J Fox Foundation for Parkinson's Research.

Parkinson's disease is a movement disorder of the nervous system that can cause tremors, stiffness, slowing of movement and trouble with balance, as explained by the Mayo Clinic. 

The disease is characterized by severe motor and non-motor control symptoms that can become more debilitating over time and significantly impact a person's quality of life. 

Fox has long been vocal about the challenges of living with its symptoms and has shared his own candid, personal experiences. 

The beloved television star, who hails from Edmonton in the Canadian province of Alberta, was among 51 people who were inducted into or promoted within the Order of Canada.

Just weeks earlier, Fox was in Los Angeles for the Emmy Awards, where he was honored with the Hope Humanitarian Award. 

Also in September, he had revealed that he has un-retired from acting sooner than expected despite the effect Parkinson's disease has had on his 'ability to memorize lines.' 

He said his new character in Shrinking allowed him to 'show up on set' as himself and gave him the opportunity to continue acting. 

He was joined by his entire family for the award show and had taken the stage to give a moving speech after accepting the humanitarian honor. 

During his acceptance speech, he discussed his diagnosis with Parkinson's at the age of 29 in the early 90s and shared the heartbreaking reason why he kept his health battle a secret from Hollywood for nearly a decade. 

Fox said he learned lessons of selflessness from the late entertainer Bob Hope and said that ultimately prepared him for the devastating diagnosis.

'I couldn't have known how these lessons would resonate in my own life, until my late 20s, when my life handed me a role I wasn't looking for.' 

Opening up about the start of his battle with the condition, he added: 'Initially I kept my Parkinson's diagnosis a secret. I worried it would affect my work and relationships with audiences.' 

He heartbreakingly admitted he questioned whether fans would 'laugh if they knew I was sick?' 

But Fox admitted his fans all over the world were what inspired him to keep going, saying: 'I was stunned by the support from all of you, so uplifted and I hadn't lost what I do. 'They couldn't take it away from me. And it's because you stood up for me. I appreciate it. 

'I understood that accepting Parkinson's didn't mean I had to surrender to it. It just meant I had to do everything I could for everyone living with this disease. I set out to advocate for Parkinson's disease and raise money. I'm proud of the progress we've made to benefit Parkinson's patients and families.'

At the Emmys, Fox was also nominated for his 19th Emmy overall for his guest role in Shrinking.