Vivienne Jolie-Pitt has reportedly dropped her father’s surname amid her parents’ legal drama. This follows claims that Angelina Jolie is trying to alienate her children from Brad Pitt, further straining their relationship with their father. Vivienne Jolie-Pitt is one of the twins of Angelina Jolie and Brad Pitt. When the twins were born in 2008, Brad was “very pleased to be at the birth of his children, very moved and very emotional,” said OB/GYN Dr. Michel Sussman. Now 15, Vivienne is exploring her artistic side with her mom’s strong support. According to People, the Playbill for the musical…