If you're over 18 and you've still got Barbie or Action Man on your Christmas list - you're not alone. It's been estimated that one in six toys will be ending up in the laps of adults this year.
Lesley Hilton visited Linnie, an adult who collects My Little Pony toys to find out why.
And Dr Tanya Krzywinska from Brunel University and Robert Twigger, author of Being a Man join Jenni to explore why some of us just can't cast childish things aside.
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