From Brad and Doug Pitt to Sharon and Kelly Stone… Meet Hollywood's most famous stars' lesser known siblings
They are some of the most famous faces in Hollywood, with their images constantly plastered over billboards and magazines.
But while Brad Pitt and Sharon Stone have earned themselves world-famous reputations thanks to their acting careers, there are other members of their families who are much less well-known.
Brad stunned fans when he took his lookalike brother Doug to the premiere of Ocean's Twelve back in 2004, but has always had a close relationship with his younger sibling.
You look just like that Brad Pitt! Doug Pitt has admitted he finds it sometimes frustrating to be mistaken for his older brother Brad
Photojournalist Doug is also a keen charity campaigner, and climbed Mount Kilimanjaro back in 2010, as well as being named Goodwill Ambassador of Tanzania the same year.
However, Doug did admit previously that sharing similar looks to a Hollywood superstar does have its disadvantages.
Asked how often he gets mistaken for his older brother, Doug said: 'Three times a week for the last twenty-something years.
'My sister is a sex bomb!' Sharon Stone admitted that her sister Kelly taught her how to flirt with men
Famous families: Julia Robers with her sister Lisa Roberts Gillan and Kylie Minogue with her brother Brendan
'I love him to death and couldn't be more proud, but my eyes kind of glaze over when I know it's coming.'
But while Doug and Brad are the spitting image of one another, other celebrities do not bear as much resemblance to their siblings.
One such pair is Sharon Stone and her sister Kelly, who have a close relationship and regularly attend events together.
Brooding looks: Salma Hayek and her lookalike brother Sami Hayek
Younger model: Jennifer Lopez with her sister Lynda, who is two years younger than her
Different fields: Sarah Jessica Parker with her brother Pippin Parker
Sharon and her younger sibling even
established Planet Hope together, a charity which offers free medical
and dental care, counselling and makeovers for homeless women and
victims of domestic violence.
Sharon even admitted in a previous
interview that it was her sister who made her more adventurous when it
came to flirting with the opposite sex.
She said: 'My sister had made me
practice being more flirtatious. She took me to Marshalls discount store
and made me practice with shoppers.
Same smiles: Miley Cyrus with her half-sister Brandi seen out together in 2009
Michelle Trachtenberg with college graduate sister Irene Trachtenberg, and Hayden Panettiere with brother Jason
'Everybody flirts with my sister Kelly. She's a sex bomb. No one ever talks to me!'
Other Hollywood families have more than one star in the brood – as is the case with Julia Roberts and her siblings.
While Julia is without a doubt the
most famous in the bunch, her brother Eric has also appeared in shows
including Heroes, as sister Lisa, known as Lisa Roberts Gillan, has had
roles in films such as Runaway Bride and Raising Helen.
Blonde beauties: The Saturdays singer Mollie King with her incredibly similar looking sister Laura