Guess which Hollywood stars are related to Kate Middleton

Research shows the Duchess of Cambridge may have some very distant (and very famous) American cousins

Kate Middleton certainly has the hair of a Hollywood movie star - but it seems she may also have the genes.

After sifting through 700 years of records, geneology database Ancestry.com has determined that Duchess Kate is a distant relative of Dakota and Elle Fanning.

Their research concluded that 20-year-old Dakota and 16-year-old Elle are descendants of Kind Edward I, an ancestor they share with the Duchess. That shared blood line makes the Fannings and the Middletons distant cousins.

The lineage also shows that Dakota and Elle (who plays Princess Aurora in Maleficent) are descendants of King Edward III, who ruled England from 1327 to 1377. The two American sisters are related to the monarch through their mother, and - if confirmed - that ancestry makes them genuine princesses.

But the Fanning sisters aren't Kate's only famous family members. In 2011, The New England Historic Genealogical Society in Boston released a book that delved into her ancestry. Research found that Kate is related to America's founding father George Washington, as well as US comedian Ellen DeGeneres. A pretty impressive family tree we're sure you agree...

Kate Middleton related to Dakota and Elle Fanning

Dakota Fanning and Elle Fanning

Kate Middleton, Prince George dungarees

Kate Middleton sailing race New Zealand

Kate Middleton sailing race New Zealand

Kate Middleton Prince William New Zealand

Kate Middleton Prince William New Zealand

Kate Middleton Prince William New Zealand

Kate Middleton and Prince George in New Zealand

Kate Middleton Prince William New Zealand

Kate Middleton and Prince George in New Zealand

Kate Middleton and Prince George in New Zealand

Kate Middleton and Prince George in New Zealand

Kate Middleton and Prince George in New Zealand

Kate Middleton, Prince William and Prince George in New Zealand

Kate Middleton, Prince William and Prince George in New Zealand

Kate Middleton, Prince William and Prince George in New Zealand

Kate Middleton shopping at Baby Gap

Kate Middleton St Patricks Day parade 2014

Kate Middleton Prince William St Patricks Day parade

Kate Middleton Prince William St Patricks Day parade

Kate Middleton Prince William holiday

Kate Middleton and Prince William

Kate Middleton's hairdresser says her curls are overdone.

Kate Middleton repeats her red Alexander McQueen dress.

Kate Middleton repeats her red Alexander McQueen dress.

Kate Middleton repeats her red Alexander McQueen dress.

Kate Middleton wears a blue LK Bennett dress.

Kate Middleton wears a blue LK Bennett dress.

Kate Middleton wears a blue LK Bennett dress.

Kate Middleton repeats her Jenny Packham dress at the Portrait Gala 2014.

Kate Middleton repeats her Jenny Packham dress at the Portrait Gala 2014.

Kate Middleton repeats her Jenny Packham dress at the Portrait Gala 2014.

Kate Middleton repeats her Jenny Packham dress at the Portrait Gala 2014.

Kate Middleton picture with the Queen

Kate Middleton picture with the Queen

Kate Middleton picture with the Queen

Kate Middleton's dresses can be rented on Girl Meets Dress

Kate Middleton's dresses can be rented on Girl Meets Dress

Kate Middleton's dresses can be rented on Girl Meets Dress

Kate Middleton and Prince William's voicemails were hacked by the News of The World

Kate Middleton joins the royal family for lunch at Buckingham Palace

Kate Middleton joins the royal family for lunch at Buckingham Palace