Fans are shocked by how Reese Witherspoon's daughter looks more like her twin sister.
The Legally Blonde actor posted a snap of herself with Ava Phillippe, 20, enjoying a skiing trip over the weekend.
Shortly after she shared the pic of the pair stood in front of snow-peaked mountains on Sunday, fans piled into the comments, claiming the 43-year-old looked more like her daughter's twin than her mother.
One follower wrote: "Twins! Hope you gorgeous angels are having an amazing time!"
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A second user commented: "Twins."
A third said: "Omg you two are gorgeous, just like two sisters."
While another added: "Omg twins!!!! I literally couldn't pick out who was who at first."
Their uncanny resemblance hasn't gone unnoticed in the Witherspoon household either.
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Speaking to Vanity Fair at the premier of Big Little Lies in 2017, the mother-of-three said: "I do see the resemblance. She's a beautiful person inside and out. She's just a good soul.
"I'm not sure what she thinks. I'm just mom to her... I really have a rich, personal relationship with my daughter. I have a really great career, and it's nice to be able to share it with my kids."
However, Witherspoon is not alone in sharing the youthful looks of her children.
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Despite a 23-year age gap, people often think single mum Joleen Diaz, from northern California, is her 19-year-old daughter's sister.
Joleen, 43, and daughter Meilani have an extremely close relationship.
The mum said: "We are very close. We do lots of things together - travel, shop, work out. And sometimes just lay on the couch and talk."
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But because she looks so good for her age, Joleen says Meilani doesn't take offence when people mistakenly believe them to be sisters.
Elementary school teacher Joleen said: "I don't think she minds. While she was growing up, she would often hear people tell me they thought my mother was my sister.
"I was pretty young when I had her, so it's not entirely impossible that we could be sisters."
The key to her youthful appearance, she explains, is a solid skincare regime.
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Joleen says: "I religiously take care of my skin. And everyday wash my face in the morning and before I go to bed.
"I began taking care of my skin at a young age, around 12 or 13.
"My mom used to buy Mary Kay [cosmetics] and I would secretly use her skin care products."
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