HOLLY Willoughby could not believe how much the TV star looked like her sister as she celebrated her birthday.
The This Morning star, 40, gave fans a glimpse of Kelly, 43, on Instagram as the sisters posed for a fun selfie.
Holly snapped the siblings standing outside a food truck as she protectively wrapped her arm around her big sister.
“Happy birthday to my beautiful sister @ladywilloughby …. Love you so so much… always 
,” Holly captioned the post.
Fans could not believe how much the sisters looked alike.
“You look so alike in this picture! Happy Birthday 
,” commented one fan.
Another added: “Twinnies 
.”
And a third wrote: “Apart from the blonde /brunette- twins
.”
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In 2013, Holly and Kelly decided to write a children’s book together – and while it might strain most relationships, it brought them closer together.
That first book has now grown into an eight book series.
The inseparable sisters struggled being apart during lockdownin 2020 – with Holly publicly telling Kelly “I miss you so much” after she shared an Easter poem written by her sibling during the first lockdown in Spring.
The Brighton-born pair have always been incredibly close.
Speaking to the Express in 2010, Holly revealed that she and Kelly never tried to outshine each other when they attended Burgess Hill School for Girls in Sussex.
She said: “Kelly was really bright and academic.
“She was head girl of the school and at the top of her year. Because we were so different, we were never in competition.”
When Kelly tied the knot 10 years ago, it was a no-brainer that Holly would be her chief bridesmaid.
In a chat with the Guardian, Holly said of her sister: “We’re more like friends than sisters. We even bought a place together in Putney.
“You would expect some fireworks, but because we have the same friends and have different roles within that group, none of that ever came into it.
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“I’m more likely to be the one to say, ‘everyone back to mine’ and cook for everyone, whereas she’s much better at tidying up.”
For Holly’s birthday in 2018, Kelly – who works as a children’s writer – wrote a gushing Instagram post for her little sister and opened up about their close relationship.
