From hairstyles to outfits and even birthing plans - it seems there's nothing the 'Kate Middleton effect' doesn't touch.
In fact, such is the pull of the Duchess of Cambridge's chic style that many households could find themselves with a pricey Christmas on their hands, if new reports are anything to go by.
Thanks to Kate and the oval sapphire engagement ring surrounded by 14 diamonds that Prince William presented her with - the late Princess Diana's ring - sapphires have seen a huge boost in popularity.
So much so it seems diamonds are no longer a girl's best friend, with sapphires being high up on scores of Christmas wish lists this year.
Classic pearls were next on their jewellery must-have list - another favourite of the Duchess of Cambridge.
It seems being 'more unique than other styles of jewellery' was the reason behind the sapphire lust, with many admitting they just wanted to copycat Kate's stunning engagement ring.
Ali O’Neill, of comparejewellery.com who conducted the study, said: “As for the Kate Middleton effect - it seems that she may be having more of an effect on the jewellery industry than many realise!
"Her engagement ring was cited by many as the main reason behind why they’d like jewellery containing sapphire for Christmas, suggesting that she has thrust the blue stone into popularity above the all-powerful diamond.”
[The Duchess of Cambridge leaves Wills and Prince George at home to steal the show at official event]
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So it looks as though it could be a pricey Christmas for many, with the type of stone or style of jewel us girls would most like to get this Christmas as follows:
1) Sapphire- 45 per cent
2) Pearl- 40 per cent
3) Diamond- 38 per cent
4) Cubic Zirconia- 35 per cent
5) Ruby- 27 per cent