The `Rango` star says although she respects actors who are nominated for Academy Awards for their roles in dramatic films, she prefers acting in comedies because she loves playing the "idiot".
She told BANG Showbiz: "I just love tapping into my inner-idiot! It`s fun. I`ve never aspired to have an Oscar. I love dramatic movies, I appreciate them, I love dramatic actors and actresses but I really love comedy."
The Australian beauty - who is married to actor Sacha Baron Cohen and has children, Olive, two and an unnamed daughter who is around six months old - even revealed she once wanted to be a clown and studied the art of being funny in France.
She explained: "I studied at clown school in Paris, I wanted to be a clown. I never thought I`d be in movies, I love doing movies. I feel so blessed and grateful for every second, but I`m just a comedy fan."
Meanwhile, Isla, 35, says her main focus is her children and she will put them before work, accepting only scripts that really interest her.
The redhead said: "Now that I`m a mum I don`t want to be away from the kids. I only work if I really love the scripts or the character or the director."