Simplify the following text for a Grade 9 native English-speaking person.
Original: Amanda Louise Marchant and Samantha Joanne Marchant ( born 26 June 1988 , England ) , better known as Samanda are a female duo , consisting of twin sisters who first came to fame on Big Brother UK in 2007 , in which they jointly achieved second place .
Simplified: Samanda ( Amanda Louise Marchant and Samantha Joanne Marchant ) , born 26 June , 1988 , are a female duo based in the United Kingdom .