Justin Bieber has a new baby sister and her name is ADORABLE

Lovely!

Author: Alex RossPublished 17th Aug 2018
Last updated 17th Aug 2018

It's certainly a time for celebration in the Bieber family! Not only did Justin Bieber recently announce his engagement to model Hailey Baldwin, the 'Sorry' singer's dad, Jeremy Bieber, has welcomed a baby girl into the world with his wife Chelsey Rebelo.

Clearly smitten with his new baby sister, Justin took to his Instagram page to share the most adorable photo of her, as he announced she's called Bay Bieber! He wrote, 'Meet the newest bieber, my little sister BAY BIEBER'. sic

SO CUTE! ❤️

Fans of the singer were quick to comment on the adorable photo. One user wrote, 'Sooooo cuutteee💕', with another adding, 'Welcome to the world Bay Bieber! 👶❤️Much love'. sic

Justin's new fiancée Hailey Baldwin also commented on the snap, she wrote, '😍😍😍😍😍😍❤️❤️❤️❤️'.

Check out the most unique celebrity baby names:

Lyra Antarctica and Jupiter

Ed Sheeran and Cherry Seaborn decided to call their first-born baby girl Lyra Antarctica Seaborn Sheeran in 2020. The pair then welcomed their second daughter in 2022, naming her Jupiter Seaborn Sheeran.

Wilder Patrick

Ant McPartlin and his wife Anne-Marie Corbett welcomed their first child together in May 2024. Taking to social media to announce the news, Ant confirmed they'd called their son Wilder Patrick McPartlin.

RZA Athelston Mayers and Riot Rose

Rihanna and A$AP Rocky chose to call their first born RZA Athelston Mayers. Welcoming their second child a year later, they named him Riot Rose.

Stormi, Aire (formerly Wolf)

Kylie Jenner and her boyfriend Travis Scott decided to call their first child Stormi, followed four years later by their second child - who was originally named Wolf, however is now called Aire.

Bambi

Love Island stars Molly-Mae Hague and Tommy Fury chose the name Bambi for their baby girl!

Axel

Little Mix singer Perrie Edwards chose to call her first child Axel, a cute little tribute to her partner Alex Oxlade-Chamberlain's surname. Axel's middle name also pays tribute to his dad, with his full name being Axel Xander Oxlade-Chamberlain.

Rumi and Sir Carter

Beyoncé and Jay-Z welcomed twins Rumi and Sir Carter into the world in June 2017, after having daughter Blue Ivy in 2012.

True

Following in her sister's footsteps, Khloe Kardashian called her first born child True.

Harper Seven

Victoria and David's daughter was named after 'To Kill A Mockingbird' author Harper Lee, with her middle name being taken from David's famous football number.

North, Saint, Chicago and Psalm

The names Kim Kardashian and Kanye West decided on for their children are certainly unique!

Kulture and Wave Set

Cardi B and Offset called their daughter Kulture. The pair then welcomed a son in 2021, naming him Wave Set Cephus.

Sunday and Finty

TOWIE star Ferne McCann decided to call her first born baby girl Sunday. In July 2023, Ferne then welcomed her second daughter into the world, calling her Finty.

Gunner Stone

Reality TV couple Heidi and Spencer Pratt welcomes their first child Gunner in October 2017.

Dream Renée

Dream is the daughter of Rob Kardashian and Blac Chyna, who have since split.

Daye Colmic

Hollyoaks actress Jennifer Metcalfe and her partner Greg Lake chose to call their first son Daye. Jennifer admitted she 'made the name up', adding that his middle name, Colmic, was made up of her and Greg's fathers' names, Colin and Michael.

Dusty Rose

Dusty is Maroon 5's Adam Levine and Behati Prinsloo's first child.

Max Mario, Buddy Bob And Buzz Michelangelo

McFly's Tom Fletcher and his wife Giovanna have three sons - Buzz Michelangelo, Buddy Bob and Max Mario Fletcher.

Luna Simone Stephens

As did John Legend and Chrissy Teigen, who called their first child Luna. Her surname is Stephens as that is John's real surname.

Phineas

Justin Timberlake and Jessica Biel welcomed their second child into the world in July 2020, with Justin confirming in early 2021 that they decided to call their second son Phineas.

Petal Blossom Rainbow, Buddy Bear Maurice and River Rocket Blue Dallas

Jools Oliver shared this sweet snap with her husband Jamie and three of their children.

Coco Valentine

Actress Chelsee Healey revealed on Instagram that she'd chosen to call her first born daughter Coco.

Cobi

The name of Westlife's Kian Egan and Jodi Albert's third son.

Journey River

Journey is Megan Fox and Brian Austin Green's third child.

Bellatrix

Competitive sailor Sir Ben Ainslie and wife Georgia took inspiration from Harry Potter when deciding on Bellatrix as their first child's name.

Remington Alexander

Kelly Clarkson welcomed baby Remi to world in 2016.

Bowie Grey

Emmerdale stars Matthew Wolfenden and Charley Webb said the name has nothing to do with David Bowie.

Kit, Kai, Klay and Cass

Wayne and Coleen Rooney definitely have a theme when it comes to their children - eldest Kai Wayne, Klay Anthony, Kit Joseph and Cass Mac.

Bowie

Take That's Howard Donald named his son after David Bowie.

Elsie Otter and Charlie Wolf

Zooey Deschanel and husband Jacob Pechenik incorporated her love of animals into their daughter and son's names.

Pilot Inspektor

Actor Jason Lee used lyrics from his favourite song.

Bluebell Madonna

Geri Horner (née Halliwell) followed in bandmate Victoria's footsteps with this quirky name!

Kingston James McGregor, Zuma Nesta Rock and Apollo Bowie Flynn

Gwen Stefani shares three sons with her ex-husband Gavin Rossdale, pictured here with Kingston and Zuma.

Arpad Flynn Alexander and Aurelius Cy Andrea Busson

Model Elle McPherson shares her two sons with her ex, Arpad Busson.

Seargeoh

Sylvester Stallone's son, a variant on the Italian name Sergio.

Ocean, Sonnet, Autumn, True

Actor Forest Whitaker's name choices are rather poetic for his children.

Kal-El

Nicholas Cage gave his son Superman's original birth name.

Audio Science

Shannyn Sossamon "Wanted a word not a name".

Bear Blaze

Titanic actress Kate Winslet called her son Bear Blaze when he was born in 2013.

Royal Reign

Lil' Kim had her very own Royal baby.

Marquise

50 Cent's son born in 1997.

Elijah Bob Patricius Guggi Q

Well this name started out quite normal, Bono...

Zowie

David Bowie's son Zowie Bowie, rolls off the tongue!

Apple

Chris Martin & Gwyneth Paltrow must love fruit, or modern technology...

Betty Kitten

A purrfect name from Jonathan Ross.

Seven Sirius

Andre 3000 named his son after a star.

Shiloh Nouvel

It wouldn't be Brad & Angelina without unusual baby names.

Willow Camille Reign

Will Smith's daughter Willow was born in 2000.

Hopper

Sean Penn's son named after the late-great Dennis Hopper.

Bear Blu

Alicia Silverstone gives us another celebrity child called Bear.

Bodhi Ransom

Megan Fox's son born in 2014.

Ode Mountain

Hunger Games' Jena Malone and Ethan DeLorenzo welcomed their first child in May 2016.

Rosalind Arusha Arkadina Altalune Florence

Uma Thurman clearly just couldn't decide on one name.

Sparrow James Midnight

Robin is a common bird in spired name, Nicole Richie didn't fancy that!

Kahekili

Evangeline Lily's son, 'Kahekili' is Hawaiian for Thunder.

Fifi Trixabelle

In terms of unconventional names, Bob Geldof set the bar high in 1983.

Ennio Stanley

Example and his wife Erin McNaught called their second baby Ennio.

Wren Ivy

Call The Midwife stars Helen George and Jack Ashton called their beautiful baby girl Wren Ivy.

Wolf Nine

Footballer Andy Carroll and his partner Billi Mucklow called their second son Wolf Nine. In September 2020, the pair welcomed a baby girl and called her Marvel.

Cruze Joshua

Former Ex On The Beach star Lillie Lexie Gregg called her son Cruze.

Birdie Mae

Jessica Simpson and her husband Eric Johnson decided to call their daughter Birdie Mae.

Dusty Violet

EastEnders actress Lacey Turner and her husband Matt Kay welcomed their first child in 2019. The couple decided to call her Dusty Violet Kay.

Koppang

The adorable name of Dermot O'Leary and his wife Dee's first child, born in June 2020.

Win Wilson

Singer Ciara and her husband Russell Wilson welcomed their first baby together on 23rd July! Announcing the happy news on Instagram, Ciara revealed her baby's unique name, 'Happy Birthday WIN!!! Mommy & Daddy Love You! Win Harrison Wilson 7.23.2020 8lbs 1 oz. ❤️ 👶🏽'

Rafe

Chris and Rosie Ramsey picked the unusual name of Rafe for their second son who was born in January 2021.

Santiago

Love Island winner Dani Dyer revealed her son's name as Santiago (Santi) for short. The unusual name is Spanish and means 'Saint James' - the patron saint of Spain.

Slimane Ray

Professor Green and his girlfriend Karima McAdams welcomed their first child into the world on Monday 15th March, deciding on the name Slimane Ray Manderson.

Jupiter Iris

High School Musical star Ashley Tisdale and her husband Christopher French chose a space-themed name for their first child.

Ender Ridley Aydin

Although she didn't reveal the gender, Halsey called her baby Ender Ridley Aydin.

Prince Tyson Fury II, Prince Adonis Amaziah, Prince John James, Venezuela, Valencia Amber and Athena

Tyson and Paris Fury are no stranger to unique baby names!

Cosmo

Baby Cosmo was born to Scarlett Johansson and her husband, Saturday Night Live star Colin Jost.

Ottilie Rue

YouTube sensation Zoe Sugg (Zoella) and her husband Alfie Deyes opted for a unique name choice for their baby girl.

Cy

Jennifer Lawrence and her husband Cooke Maroney welcomed their first child in February 2022 and kept his name a secret for the first few months of his life. In September, she revealed that her son is called Cy, after one of her husband's favourite artists, Cy Twombly.

Apollo Magnus Obi and Cosima Emily Bex Locke-locke

Made in Chelsea stars Ollie and Gareth Locke announced the arrival of their twins Apollo Magnus Obi and Cosima Emily Bex Locke-locke. The twins were born on 8th July.

The birth of Bay Bieber comes just a few months after Justin's dad Jeremy married his wife Chelsey Rebelo.

In homage to their unborn child, Jeremy and Chelsey made the theme of their wedding day pink, with both Justin and his younger brother Jaxon attending.

Meanwhile, on the subject of weddings, despite original reports suggesting Justin and Hailey could walk down the aisle very soon, it looks like they aren't rushing into anything.

According to US celebrity news site TMZ, sources close to the couple say they have decided "not to rush to the altar" and to wait until next year. The publication reports that "it's not because they're unsure," it's because they "feel they've made the commitment and that's the most important thing."

Justin and Hailey announced their engagement in July.

You can hear some of Justin's biggest hits on the Downtown Radio playlist.