Rumer Willis is flaunting a baby bump on Instagram after announcing that she’s expecting her first child

Rumer Willis is flaunting her baby bump on social media after announcing her pregnancy earlier this week.

The eldest child of Demi Moore, 60, and Bruce Willis, 67 – who met for a tender pictorial earlier this month – made her bump debut on Tuesday.

Rumer, 34, is expecting her first child with boyfriend, Vista Kicks captain Derek Richard Thomas, 36.

Rumer posted a new photo to her Instagram story on Thursday, proudly showing off her bump in a skin-tight black bodysuit.

The actress’s boyfriend stood next to her, slyly feigning a flat stomach in order to accentuate the difference in their profiles.

The couple made the initial announcement earlier this week by putting out a series of photos that showed the indie musician resting his head on Rumer’s stomach, looking beaming.

Demi Moore posted the same photos on her Instagram account and captioned them: “Entering my annoying hot granny era.”

Demi went on to post a photo from her daughter’s ultrasound appointment.

The Ghost star posed with one of her two puppies and her two other two daughters, Willis — Tallulah, 28, and Scout, 31 — as Rumer glowered on the examining chair, her stomach exposed.

Bruce Willis and his second wife, Emma Hemming, 44, also shared a sweet post on Instagram, writing, “Baby news is happy news!!! Congratulations @rumerwillis and @derekrichardthomas we are so happy here!”

The Die Hard Action icon is going through a difficult struggle with aphasia, a brain disorder that affects an individual’s ability to speak and understand language.

Bruce’s family announced his diagnosis in March of this year and announced his retirement from acting.

This will be Demi and Bruce’s first grandchild.

A-listers were one of Hollywood’s power couples throughout their mutual heyday in the ’90s, tying the knot in 1987 and parting ways in 2000.

Rumer and Derek became Instagram official as a couple in November, but they’ve been an item for quite some time.

Roemer previously described Thomas as the most talented singer-songwriter I’ve heard in a very long time (maybe ever) on Instagram.

“This guy has my heart,” she gushed on her Instagram Story in September, calling Derek a “rock cold fox.”

Meanwhile, the Real F***ing Lucky singer referred to the future mother of her baby as a “magical human being” who filled in ” [his] Life with joy and peace.

Everything is easy with you. We sing, we dance, we play, and most of all, we laugh. Thanks for being you,” Derek wrote on Instagram. “I am so glad you came into my life.”