Professor Joshua Bamfield, director of the Centre for Retail Research, told the Daily Telegraph that Princess Charlotte could be worth a gobsmacking £150 million per year to the British economy.
He predicted that the "immediate boost" in the days and weeks after her birth could be worth around £80 million, with celebratory food and drink accounting for most of that and approximately £25 million being generated by souvenirs.
So what can you choose from if you want to invest in a royal baby keepsake? Here are our top picks of Princess Charlotte goodies.
Princess Charlotte commemorative tea towel, Amazon (£8)
Royal Baby Celebration Teddy Bear, Merrythought (£106)
"I Was Charlotte First" T-shirt, Kushdi for Kids at Notonthehighstreet.com (£13)
Unfortunately you can't actually buy this tea but it was too cute to leave out and you can try to win a box on Yorkshire Tea's Facebook page.
"Hooray for Charlotte" mug, Emma Bridgewater (£20)
Royal baby tin with miniature shortbread assortment, Walkers Shortbread (£5)
Limited edition Princess doll's pram, doll and bag, Silver Cross (£400)
Princess Charlotte phone cover, Amazon (£5)
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