Barbie's the kind of doll that doesn't need a last name.

We've been so familiar with the iconic toy that we always assumed she just didn't have a surname because, well, she's famous enough to get by with just the first name.

Like Britney and Madonna, she can go by the one moniker.

Well, apparently she isn't just 'Barbie' – people were surprised to find out on National Siblings Day that the beloved toy's last name is…

Barbie's full name is Barbara Millicent Roberts, after creator Ruth Handler's daughter Barbara.

Barbie was first introduced in 1959, with the Ken doll joining her in 1961.

Ken, named after Ruth's son Kenneth, actually has a surname as well: Kenneth Carson.

Twitter users were shocked by the fact that their favourite childhood doll actually had a surname.




Yep, we are still trying to cope with this earth-shattering revelation, too.

Also, this is the perfect type of pub quiz type of fact for us to keep in our back pockets.

Did you know Barbie had a last name?