Shriver 'refused to attend event with Cyrus'

Maria Shriver refused to attend a party after learning Miley Cyrus was also invited.

The estranged wife of Arnold Schwarzenegger had planned to attend Art Basel Miami with her brother Anthony Shriver, but cancelled upon hearing the 'Wrecking Ball' hitmaker - the pop star girlfriend of Maria's 21-year-old son Patrick Schwarzenegger - was scheduled to attend.