Stacey Solomon has a younger brother Josh, who is a music producer.
The mum-of-five, 33, often posts snaps of her sister Jemma, but little is known about her half-sibling, whose father is Stacey's dad, David.
David divorced Stacey's mum Fiona, when the Sort Your Life Out star was nine. He went onto remarry and welcomed Josh, now 18, with his new partner.
Stacey hasn't posted a photo with her brother since 2018, when she joked they were both suffering from pimples.
Captioning the snap, in which the siblings show their skin to the camera, the star wrote: “I love my little brother so much that I appear to be experiencing sympathy puberty. Or at least that’s what we’ve called it!
"Had the best laugh with my lil bro tonight talking about all things hormone induced and I’m grateful to my spots for making that happen. Love you Joshy!”
In her 2019 autobiography, Stacey also said she was “very close” to all her family members.
Josh now describes himself as a music producer and has a Spotify page where he’s listed as a verified artist.
He recently shared a new song he produced by an artist named Solz, entitled Running.
The 18-year-old is also a big Tik Tok fan and boasts more than 20,000 likes on his videos, using his @joshjoshjosh handle.
He regularly shares updates on his music as well as information about his life, but doesn't reference his famous sister.
Stacey also has another brother, Matthew, who prefers to stay out of the spotlight and is rarely mentioned by his high-profile sibling.
Little is known about the 28-year-old's personal life, but Stacey did share he was engaged back in 2019.
The star's sister Jemma, 35, is much more vocal on social media and regularly posts about being a proud mum of three.
The entrepreneur appeared on Loose Women in 2021 to talk about what life was like growing up with younger sister Stacey.
Jemma and Stacey were born 18 months apart and said they were typical teenagers, who argued all the time.
However, the siblings are extremely close, with Stacey saying to Jemma during the interview: "I don't know what I'd do without you Jems a lot of the time."
Jemma also arranged Stacey's baby showers and played a big part in getting everything ready for the X Factor star's wedding to EastEnders' Joe Swash last year.