Rumer Willis, 34, said the Father's Day memory would be something she would "treasure" for the rest of her life.

In the photo, Willis is captured for the first time with his new granddaughter Louetta Isley, who is eight weeks old.

The accompanying post said: "Fathers to the old and new. Seeing my father hold my daughter today was something I will treasure for the rest of my life. His sweetness and love for her was so pure and beautiful,"

"Papa I'm so lucky to have you and so is Lou. Thank you for being the silliest, most loving, coolest Daddio a girl could ask for. Best Girl Dad in the game…."

Earlier this year, Willis was diagnosed with frontotemporal dementia (FTD).

It came after his aphasia diagnosis in 2022 - a condition affecting the brain which causes difficulty with language and speech.

Upon announcing his dementia, his relatives said that he would be "stepping away" from acting.

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

"Unfortunately, challenges with communication are just one symptom of the disease Bruce faces. While this is painful, it is a relief to finally have a clear diagnosis."

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Rumer also thanked fans on Instagram for the "outpouring" of love and support.

"Our family wanted to start by expressing our deepest gratitude for the incredible outpouring of love, support and wonderful stories we have all received since sharing Bruce's original diagnosis," she said.

"In the spirit of that, we wanted to give you an update about our beloved husband, father and friend since we now have a deeper understanding of what he is experiencing."