The 46-year-old Oscar winner, who has three kids -- Hazel, Phinnaeus and Henry with husband Daniel Moder, sparked pregnancy rumours after she was spotted sporting a slight enhanced stomach, reported Ace Showbiz.
She recently clarified the rumours while appearing on 'Late Show With David Letterman'.
When Letterman asked Roberts, "Have you thought about adding more to the group?"
The actress answered quickly, "Oh, sure."
When he again asked her, "Any chance?", she replied, "No."
The 'August: Osage County' star also talked about her children and their homework.
