If you thought one of the girls in the ‘Telephone’ video was Gaga in disguise, you might have been looking at her sister, Natali Germanotta. ‘Telephone’ was originally written for Britney Spears, but the plans fell through and Gaga recorded it herself. The video has over 13 million hits on YouTube so far. Fast forward to the 2:17 mark to see Gaga’s sister standing behind her.