How many movies have Isabella Acres and Madison Pettis acted in together?

They have worked on 2 movies together! Their first movie together was Horton Hears a Who! (2008) while their highest rated movie together was Phineas and Ferb: Night of the Living Pharmacists (2014). They have not worked together since Phineas and Ferb: Night of the Living Pharmacists (2014).