Isla Fisher and Sacha Baron Cohen have welcomed their third child.

The couple - who already have two daughters, aged seven and four, together - have welcomed the new arrival, Us Weekly magazine confirmed today (10.04.15).

The baby's gender and name has yet to be confirmed and details about the little one have yet to be released.

Meanwhile, a source recently claimed that Isla's third pregnancy is the ''toughest yet''.

The insider said: ''Isla's exhausted. Sacha helps, but she's been finding this pregnancy her toughest yet because her daughters are so active.''

And the 39-year-old actress is supposedly convinced she is having a boy this time around because she has been suffering from less morning sickness than her previous pregnancies.

The source added: ''Luckily, she hasn't had morning sickness this time and feels that could be a sign she's having a boy.''

Isla is also likely to breast-feed her new arrival after she previously revealed she loved the special ''bond'' it created between her and her other children.

She said: ''What I loved about breast-feeding was that bond of one-on-one time. The serotonin that's released calms you down and connects you to the baby.''