The "A Little Chaos" star, who will turn 40 on October 5, said she is looking forward to celebrating with lots of activities and "daredevil" things, reported Female First.
"The best part for me of turning 40 is all the parties I'm going to have because I'm going to have a festival of parties, doing lots of different things involving lots of friends, lots of children, lots of family stuff," the "Revolutionary Road" star said in an interview to USA Today.
"And hopefully there'll be lots of activity, being outside, doing a few daredevil things. The best part of turning 40 is doing all that I think."