Rumer Willis and her mother Demi Moore put on a united display at the Common Ground screening amid Bruce’s brutal struggle with dementia

Rumer Willis and Demi Moore performed together at a screening of Common Ground in Los Angeles on Monday.

Rumer, 35, is the eldest child of Demi, 61, and legendary actor Bruce Willis, 68.

Bruce's family has had a very difficult year since his diagnosis with frontotemporal dementia, an unusual form of the disease that causes a deterioration in behavior, personality and language.

But the mother and daughter duo appeared in good spirits for the screening, with Rumer looking radiant in a cozy jumper, while Demi was as age-ready as ever.

Rumer also posed for photos with her boyfriend Derek Richard Thomas, with whom she welcomed her first child Louetta in April.

They were also joined by Ian Somerhalder from Vampire Diaries and his wife Nikki Reed from Twilight.

Common Ground is the follow-up to the documentary Kiss The Ground and visits farms around the world with celebrities, shedding light on soil biodiversity.

It features Ian Somerhalder, Jason Momoa and Laura Dern.

Meanwhile, Bruce's family is said to be “enjoying every moment” of the Die Hard actor while they can.

A source said UsWeekly: 'Bruce has good days and bad days, but in the past two months there have been far more bad days than good. This experience has brought the whole family even closer together.'

His wife Emma Heming Willis recently fought back tears as she shared an update on his health.

'No one knows how much time Bruce has left, so they enjoy every moment they are with him. (Everything) revolves around him. Bruce has 24-hour care, but at least one family member is with him at all times.”

Bruce – who is married to model Emma, ​​45, but has daughters Rumer, 35, Scout, 32, and Tallulah, 29, with ex-wife Demi – became a grandfather for the first time when he welcomed his eldest daughter Louetta in April.

Bruce and Emma also share two daughters: Mabel Ray, 11, and Evelyn Penn, eight. The couple married in 2009.

The iconic actor became a household name in a number of films, including Pulp Fiction, Die Hard, Moonlighting, Armageddon, The Fifth Element, 12 Monkeys, Unbreakable, Tears of the Sun and many more.

Bruce's condition – which causes problems with behavior and language – was confirmed by his loved ones in a statement earlier this year, which said: 'As a family we wanted to take this opportunity to thank you all for the outpouring of love and compassion for Bruce. during the past 10 months.

“Your generosity of spirit has been overwhelming, and we are deeply grateful for it.

“For your kindness, and because we know you love Bruce as much as we do, we wanted to give you an update.

'Since we announced Bruce's aphasia diagnosis in the spring of 2022, Bruce's condition has progressed and we now have a more specific diagnosis: frontotemporal dementia (known as FTD).

'Unfortunately, communication difficulties are just one symptom of the illness Bruce is facing. While this is painful, it is a relief that we finally have a clear diagnosis.”