What is it about the contestants on the U.K. version of Big Brother? Unlike it's U.S. counterpart, it seems like the British contestants, if not already famous, can turn their 15 minutes into more than just recycling themselves through other reality shows. Such would be the case of twin sisters Sam and Amanda Marchant, AKA Samanda. First, they tried a singing career, including covering the Aqua dance song "Barbie Girl":