The actress, who has planned to meet Barrymore's one-week-old Frankie, said being an aunt she would love to babysit her friend's children, reported People magazine.
"I haven't seen her (Frankie) yet but I'm going to this weekend. (Drew) is doing wonderful. Of course (I'll babysit), I'm an auntie!" Diaz said.
'The Wedding Singer' star recently said that she and her husband Will Kopelman prefer to care of their children without the help of babysitters as they like to spend the weekends together as a family.