( CNN ) Here 's a pair of twins no one will have trouble telling apart : One is white , and one is black . Thanks to a rare quirk of nature , Lucy is the alabaster-skinned redhead , and Maria has their part-Jamaican mother 's dark skin and hair . Images of the Aylmer sisters of Gloucester , United Kingdom , rocketed around the Internet this week when a British newspaper carried their story . `` I ca n't stop crying ! This is all so amazing , '' Lucy Aylmer posted on Facebook . The girls were born to a white father and a biracial mom in 1997 , according to the Daily Mail story that started all the fuss . 'No one ever believes we are twins , '' the newspaper quoted Lucy Aylmer as saying . `` Even when we dress alike , we still do n't look like sisters , let alone twins . '' Appearing Tuesday on `` Good Morning Britain , '' the sisters said they 're always facing doubters who ca n't believe they are related , much less twin sisters . Some even asked whether Lucy was adopted , she told the show . `` It was pretty hard , '' she said . `` It went on in secondary school as well , and it was n't very nice . '' Maria said they 've been told the chances of such an occurrence are `` one in a million . '' The BBC , reporting on a similar case in 2011 , said it was more like 1 in 500 . No matter the odds , the sisters say they 're happy with how they look . `` Maria loves telling people at college that she has a white twin -- and I 'm very proud of having a black twin , '' Lucy told the Daily Mail . `` My family is beautiful , '' she posted on Facebook .
UK twins , one white and one black , have had to fight to prove they 're sisters . `` My family is beautiful , '' one sister posts on Facebook .