Megan Fox is returning to 'New Girl'.

The 30-year-old actress - who is currently expecting her third child with husband Brian Austin Green - has been signed up to reprise her role as Reagan in the hit show but will join halfway through the new series, after she has given birth.

Megan joined the 'New Girl' cast in season five to help add some star power to the show while Zooey Deschanel - who plays the main character, Jess - was on her own maternity leave.

And the 'Transformers' beauty proved such a hit with viewers that bosses have signed her up for eight more episodes.

But before she starts filming, Megan will welcome her third child into the world.

Speaking about the pregnancy, she has said: ''The pregnancy is really good. I'm happy and healthy. There are no more cravings.''

News of her pregnancy came as a shock to many as it was revealed just a month after she announced her and Brian were divorcing.

However, the couple - who already have sons, Noah, three, and Bodhi, two, together - are said to have given their marriage another go and are looking forward to their new arrival.

A source said: ''They're totally back together. They've been through a lot, but this makes more sense for the kids and the new baby.''

And, according to Megan's father, Franklin, the couple will be welcoming another son into their lives.

He said: ''Megan is an amazing mum and I can't believe she is going to have three boys. Becoming a grandfather has been a wonderful experience and brought us all even closer together.''