More than half of young women raid their mother's wardrobes for dresses, coats and shoes because they want to dress like their mum.
Online retailer JD Williams found that seven out of 10 daughters borrowed their mother's designer tops, skirts and handbags because they don't have the money to buy their own.
It's not that daughters want to adopt a more frumpy dress sense – but the fact that mums are more stylish than ever, with 52 per of young women saying their mother is their biggest style influencer.
JD Williams spokeswoman Carie Barkhuizen said: "It is now impossible to tell a woman's age simply by looking at the clothes in her wardrobe.
"British mums regularly wear the latest fashions, as well as shorter skirts, slim line suits and figure hugging tops. It's a revolution in the way older women see themselves.
"We estimate that the average mum now dresses in styles which, just a generation ago, would have been seen as being more suitable for women who were twenty years younger."
She added: "Few women now regard age as a barrier to being at the forefront of fashion.
"The era when British women marked their 50th birthday by suddenly having a blue rinse and changing into clothes which made everyone look like Barbara Woodhouse have gone."
The trend was recently highlighted by Carole Middleton and her daughter Kate - who appeared to have shared the same blue frock.
The Duchess of Cambridge wore the Reiss dress as she gave her first public speech in 2012, but it was revealed that mum Carole had worn it two years earlier at Ascot.
Singer Alexandra Burke and her mother Melissa Bell also having a similar style.
Melissa said: "I think a girl's first and biggest fashion icon will always be her mum because that's the first thing she sees as she's growing up.
"Alex and I do have the same style up to certain extent however she is very adventurous and likes to try new things. I do too, but believe in dressing appropriately for my age so what she chooses to wear isn't always appropriate for me - whereas she is certainly no stranger to my wardrobe."
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Mums with daughters are more stylish than women with sons