Isla Fisher and Sacha Baron Cohen have reportedly named their newborn son Montgomery Moses Brian Baron Cohen.

According to the birth certificate obtained by TMZ, the proud parents called their newborn son, Montgomery Moses Brian Baron Cohen.

Fisher confirmed her third pregnancy in October 2014.

Speaking to The Telegraph in 2013, Fisher said: "Family is 100 per cent my top priority. So I'm much more comfortable doing supporting roles right now. And often, they're the most interesting. You get to be a character actress."

The pair are already proud parents to two daughters Olive, 7 and Elula, 4.