Sean Ono Lennon has become a father for the first time.

The 50-year-old musician, who is the son of the late John Lennon and his wife, Yoko Ono, and his partner, Charlotte Kemp Muhl, recently welcomed their son, Aurelius, into the world.

After Sean's uncle, Julian Lennon, revealed the news in a now-deleted social media post, Sean took to his own Instagram account on Tuesday (09.01.26) to share a photo of himself and Charlotte with their new arrival, which he captioned: "Okay so... Charlotte and I would like to announce that we have indeed created a Human Bean! His name is, Aurelius! Thank you! (sic)"

He also shared two other posts, one featuring himself holding his son, who was wrapped in a white blanket, and another showing Charlotte in a hospital bed with the newborn resting on her chest.

While the first post had no caption, Sean wrote alongside the second: "Baby Momma!"

Charlotte also shared her own post featuring life as a family of three and admitted she was feeling sleep-deprived.

The 39-year-old beauty wrote: "We made a human! Am convinced DNA is agentic alien quaternary code.

"The sleep deprivation only adds to the surrealism... Burping technique tips welcome. Been playing him Aphex Twin and Stravinsky. Meconium is crazy."

While the couple, who have been together since 2007, didn't reveal when their son was born, Julian's post revealed that he became an uncle "this weekend."

The "Saltwater" singer wrote on Facebook: "After stopping in London for 48hrs to see my doctor, to check on my health, which thankfully is getting better every day, I managed to squeeze in a few visits with some family and friends I hadn't seen in a few years, from my 'Sister' Mary, to my old mate Nev (aka Belouis Some) and a cinema visit with my dear friend Zoe Grace... but also took the time to walk around where I grew up in Kensington with my Italian stepfather, Roberto Bassanini... at No 7 Pembroke Gardens, which I have incredibly fond Memories of, and the nearby park and pub, and school I attended, which I write about in my upcoming memoir.

"But I think as lovely and wonderful as this little visit was... the most amazing thing that happened this weekend, in the whole wide world, was that I became an uncle! Congratulations to Sean and Charlotte, and their new 'Beautiful Boy!' Only Love. So very Thankful. Uncle Jules. (sic)"

He later updated the post to remove the paragraph about Sean's happy news.