Rumer Willis showed off her baby bump as she stepped out for a workout in Beverly Hills on Sunday.

The 34-year-old singer, who is expecting her first child with boyfriend Derek Richard Thomas, 28, opted for a skin-tight black bodysuit that showed off her changing shape.

Rumer is the eldest daughter of Bruce Willis67, and Demi Moore60 – wore her blonde locks in loose curls for a trip to the gym.

Rumer, who confirmed her pregnancy news in December, kept her essentials in a small black clutch bag and added a pair of dark sneakers to her look.

The star went makeup-free and let her natural beauty shine before stepping out.

She looked deep in thought on her way home from training.

Rumer revealed her pregnancy by sharing a picture Derek kissing her baby bump on Instagram in December.

Since then, the “Hostage” star has been keeping her followers updated on how she takes care of herself.

Their baby will be the first grandchild for The Sixth Sense star and actress Demi.

Last spring, Rumer and Derek went public with their romance and she recently admitted that she had “never been happier in her life.”

On Valentine’s Day, she thanked her boyfriend for “making me a mom and being my partner on this wild ride into parenthood.”

She said he already “takes such good care of me and our little one” and that they are “so lucky to love you.”

Her romantic feelings for Derek had started a few days before heartbreaking news that her father is Brucethe dementia progressed.

Mum behind the scenes: The 34-year-old singer, who is expecting her first child with boyfriend Derek Richard Thomas, 28, opted for a skin-tight black bodysuit which showed off her changing shape

His family revealed that he had been diagnosed with frontotemporal dementia (FTD).

The diagnosis came less than a year after he retired from acting because of his battle with the brain disorder, aphasia.

The Sixth Sense star turned down the role last year began a struggle with the disease, which led to the deterioration of his language abilities.

His condition has now “progressed”, according to a joint statement from his family.

FTD affects the lobes of the brain behind the forehead that are responsible for behavior, problem solving, planning, and emotions.

Symptoms include personality changes, obsessive behavior, and difficulty speaking.

The statement was made on behalf of his wife Emma Hemming, ex-wife Demi and five daughters and was posted on the Frontotemporal Degeneration Association website.

It said: “Our family wanted to start by expressing our deepest gratitude for the incredible love, support and wonderful stories we have all received since sharing Bruce’s initial diagnosis.

Heartbreaking: It comes after her father Bruce Willis, 67, was diagnosed with frontotemporal dementia (PTD) – less than a year after he retired from acting due to the brain disorder aphasia

The statement continued: “In that spirit, we wanted to give you an update on our beloved husband, father and friend as we now have a deeper understanding of what he is going through.

“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 problems are just one symptom of the illness Bruce is dealing with. As painful as it is, it’s a relief to finally get an accurate diagnosis.

“FTD is a brutal disease that many of us have never heard of and that can affect anyone. For people under the age of 60, FTD is the most common form of dementia, and because it can take years to be diagnosed, FTD is probably much more common than we know.’