Bruce Willis is “so sweet” with his granddaughter, his daughter Rumer Willis has revealed in an update on the Die Hard actor.

The star has retreated from the public eye after being diagnosed with dementia but Willis has told fans he is doing “good” and she loves seeing him interact with her 13-month-old daughter Louetta.

“He’s so good. I actually got to see him right before I came out [to New York],” Willis said of her dad on US morning TV show Today with Hoda and Jenna.

“And Lou is just starting to walk a little bit, and she was walking over to him, and it was so sweet.

“It’s so nice because I feel like my dad is just like – he’s a girl dad, through and through. It almost unlocks that kind of little-kid, girl-dad thing. He’s so sweet with her.

“I  saw him with my sisters, my little sisters. So you’re seeing that all come back again.”

Bruce Willis turned 69 in March, with Rumer posting a sweet video to Instagram to say “happy birthday, daddio”. It began with a throwback photo of her as a baby with her father.

In 2022, Willis’s family – including Rumer, her mum Demi Moore, sisters Scout, 32, and Tallulah, 30, as well as the Pulp Fiction star’s wife Emma Heming and their kids Mabel, 12, and nine-year-old Evelyn – announced he was retiring from acting after being diagnosed with speech and language disorder aphasia, with his dementia diagnosis then confirmed the following year.

The House Bunny actor said it was “so important” for the family to speak publicly about Bruce’s health issues in the hope they could offer comfort and support to others in similar situations.

“Our vulnerability and transparency as a family about what he’s going through to me is so important because if it can have any impact on another family that is struggling in any way with something like this, or bring more attention to the disease in hopes of finding a cure or anything that can be of service to anybody else, I think is really important,” she said.

The 35-year-old star, who has her daughter with boyfriend Derek Richard Thomas, has been touched by the outpouring of love and support following revelations of her father’s diagnosis.

“People will stop me on the street or at the airport, wherever it is, and are so effusive about how much they love him, how much of an impact he’s had on them, or just that they’re sending love to our family,” she said.

“It really makes me a proud daughter, honestly, to just see how much love he’s getting.”

-with AAP