As PopSugar reports, vintage Barbie dolls in the '60s had the word "Japan" stamped on the bottom of their right foot as a reference to where they were originally manufactured. Now, as a nod to that iconic stamp, women are getting tattoos on the soles of their own feet to shout-out where they come from. Delevingne, naturally, has ""Made in England"" on one foot (the other says "Bacon"). The most popular design by far pays homage to Barbie herself, with a "Made in [insert country here]" trend representing areas as far-flung as Italy and Iran.

However, creative minds are inking their birth years, band symbols from their favorite groups, intricate designs, movie references, and even words of affirmation. Toy fans who aren't into Barbie can choose another famous toy-based sole tattoo with the "Andy" ink made famous by Woody in the Toy Story franchise. These tattoos may be small, but they're easily customizable, too, and can be matched to your individual style. These inkings are particularly suitable for those looking for a baby tattoo that isn't visible most of the time.

But it's worth noting that the soles of the feet are among the least suitable places to get tattooed, because the ink can drop out or blow out (meaning spread unevenly) very easily, so keep that in mind before going under the needle, per the U.K.'s Modern Body Art's blog.