48

Years on this planet.  Poor Barbie.  She's gotta be feeling old by now.  But lucky for her, the year of her birth, 1959, is the same year that Allen Gant invented pantyhose.  She's been able to keep everything properly covered her whole life.

If Barbie had travel plans, she would most certainly want to visit Hawaii for her birthday bash.  It was admitted as the 50th US state in August of 1959.  Alaska was admitted earlier that same year, but Barbie isn't allowed to wear real fur and it's just too cold there.

Barbie might also be happy to learn that she was born the same year as Sarah Ferguson (Fergie, Duchess of York) and "Weird Al" Yankovic.  I'm sure Barbie would be happy to have them meet entertainers Ryan Stiles and Sheena Easton who are also 48.

If Barbie is a fan of canned meats (isn't everyone??) she will be happy to know that the pull tab was also invented in the year of her birth.  Some of the meat in those cans has probably been around at least 48 years.

So Barbie, here's hoping for another 48 years of plastic perfection!