One set from the decade – the 1997 Polly Pocket Beauty Case – fetched £4,800 on eBay last year, while a more recent auction ...

We may earn commission from links on this page, but we only recommend products we love. Promise. You likely know this already, but just to reassure you: yes, "big" birthdays are absolutely a thing.

We independently review everything we recommend. We may get paid to link out to retailer sites, and when you buy through our links, we may earn a commission. Learn more› By Marilyn Ong Marilyn Ong is ...