Comedian Sacha Baron Cohen and his actress wife Isla Fisher have reportedly become parents for a third time.

Details surrounding the baby's birth are scarce, but the new mum, 39, was spotted with a noticeably slimmer figure while attending a private party at Lucy's El Adobe Cafe in Los Angeles with Borat star Cohen, 43, on Thursday (09Apr15), according to UsMagazine.com.

News of her pregnancy emerged in October (14). The fiercely private couple, which wed in 2010, has yet to comment on the arrival of their third child.

They are also parents to daughters Olive, seven, and Elula, four.