Apparently, there are people out there that can't tell Keira Knightley and Britney Spears apart.
In color us confused news, Keira - who looks nothing like Britney's long lost twin - said she gets mistaken for the pop star often.
"I get quite excited because I quite like the idea that I could do all that [pretends to shimmy], which I can't do. So I've been Britney Spears like three times," she told Graham Norton when she appeared on The Graham Norton Show with Samuel L. Jackson June 13.
Keira has even taken pictures and signed autographs as Britney when people have thought she was the singer (who are these people?).
That was the most surprising celeb the actress said she gets mistaken for, but more commonly, people sometimes think she is Natalie Portman.
"Natalie Portman I get a lot, and I get chased through airports," Keira continued. "I feel quite sorry for her because she must get chased a lot because it's happened like five times where someone's been like 'NATALIE, NATALIE, NATALIE.' And I'll sign and take a picture as Natalie."
We understand that one a bit more, since both are brunette and have similar body types and features.
Keira also said she gets mistaken for Kate Winslet...maybe because they're both from the U.K.?
We're at a loss.