Rumer Willis, 34, happily shows off his baby bump while little sister Tallulah, 28, beams next to her

Rumer Willis, 34, happily shows off his baby bump while little sister Tallulah, 28, beams next to her

Bruce Willis and Demi Moore’s daughter Rumer, 34, happily shows off her baby bump while little sister Tallulah, 28, beams beside her

Bruce Willis and Demi Moore’s daughter Rumer, 34, happily showed off her blossoming baby bump this Wednesday.

The showbiz legacy posted a black-and-white Insta Stories snap, which also featured her little sister Tallulah, 28, beaming next to her.

While Rumer stood in profile to show off her growing belly in relief, Tallulah crouched down and playfully stuck out her tongue.

Baby joy: Bruce Willis and Demi Moore’s daughter Rumer, 34, happily showed off her blossoming baby bump in a picture with her little sister Tallulah, 28

The snap was accompanied by a lengthy caption captioning Shaklee Meology’s prenatal packs of vitamins and supplements.

Rumer is expecting a baby with boyfriend Derek Richard Thomas, who she had been dating for months before officially taking to Instagram in November.

In December, Demi happily announced Rumer’s pregnancy on Instagram, joking that she herself was “entering my hot, crazy granny era.”

In an Instagram post celebrating New Year’s Eve, Rumer confessed that she “still can’t believe I’m cooking a little person in my belly right now.”

Expectant parents: Rumer is expecting a baby with boyfriend Derek Richard Thomas, who she had been dating for months before they officially went on Instagram in November

Expectant parents: Rumer is expecting a baby with boyfriend Derek Richard Thomas, who she had been dating for months before they officially went on Instagram in November

Grandmother-to-be: In December, Demi happily announced Rumer's pregnancy on Instagram, joking that she herself was

Grandmother-to-be: In December, Demi happily announced Rumer’s pregnancy on Instagram, joking that she herself was “entering my hot, crazy granny era.”

The Once Upon A Time…In Hollywood actress shared, “I am so deeply grateful for the incredible lessons and gifts I have received this year. I am so thankful that this little soul chose me to have the privilege of being her mother.

As New Year’s Eve progressed, she treated her fans to a heartwarming image of her boyfriend lovingly kissing her baby bump.

“So grateful for everything this year has brought me,” she gushed. “My love @derekrichardthomas and this new soul that chose me.”

Rumer delivered a message of welcome to her upcoming little bundle of joy: “Can’t wait to meet you, little one. I love you so much already.’

1674183086 915 Rumer Willis 34 happily shows off his baby bump while

“I’m so grateful”: In an Instagram post celebrating the New Year’s Eve celebration, Rumer admitted that she “still can’t believe I’m cooking a little person in my stomach right now.”

Message from her mom: Willis also shared a message of her upcoming joy botch and how she can't wait to meet you little one.

Message from her mom: Willis also shared a message of her upcoming joy botch and how she can’t wait to meet you little one.

Demi and Bruce welcomed three daughters together – Rumer, Tallulah and their middle child Scout, 31 – before their divorce in 2000.

Bruce. 67, has since married model Emma Heming, 44, with whom he shares his two younger daughters, Mabel, 10, and Evelyn, eight.

The blended family have managed to forge a famously friendly relationship, and they all rallied around Bruce last year when the longtime film star retired from acting due to his battle with the brain condition aphasia.

Consensual exes: Demi and Bruce welcomed three daughters together — Rumer, Tallulah and their middle child Scout, 31;  they are pictured with Tallulah

Consensual exes: Demi and Bruce welcomed three daughters together — Rumer, Tallulah and their middle child Scout, 31; they are pictured with Tallulah